125876 + Interview Questions in General QA

1.	“Then the situation changed.” What is being referred to ?
Answer» Jumman’s aunt had transferred the property to Jumman with the agreement that he would take care of his aunt and her needs. However, within two years of the agreement, both Jumman and his wife changed their attitude towards their aunt. This is the change in the situation that is being referred to.

Discussion

2.	Read the following extract carefully and answer the questions that follow:Pistol in his left hand, pistol in his right,And he held in his teeth a cutlass bright, His beard was black, one leg was wood; It was clear that the pirate meant no good1. What did the pirate have in his hands?(i) The pirate had treasure in his hand.(ii) The pirate had gems in his hand.(iii) The pirate had flowers in his hand.(iv) The pirate had pistols in his hand.2. What was in the pirate's teeth?(i) The pirate had a sword in his teeth.(ii) The pirate had gold in his teeth.(iii) The pirate had a decay in his teeth.(iv) The pirate had silver in his teeth.3. How does the poet describe the pirate's beard and leg?(i) The poet describes his beard as white and leg was wooden.(ii) The poet describes his beard as black and leg was tin.(iii) The poet describes his beard as black and leg was wooden.(iv) The poet describes his beard as black and leg was metal.4. Did the pirate come for something good?(i) Yes, he came for something good.(ii) No, he did not come for anything good.(iii) No, he came to play the animals.(iv) Yes, he came for giving presents.5. What does the expression 'the pirate meant no good' convey?(i) It means that from the pirate's expression it is clear that he had gone there to do some harm.(ii) It means that from the pirate's expression it is clear that he had gone there to do some good.(iii) It means that from the pirate's expression it is clear that he had gone there to play.(iv) It means that from the pirate's expression it is clear that he had gone there to tease them.
Answer» 1. (iv) The pirate had pistols in his hand. 2. (i) The pirate had a sword in his teeth. 3. (iii) The poet describes his beard as black and leg was wooden. 4. (ii) No, he did not come for anything good. 5. (i) It means that from the pirate's expression it is clear that he had gone there to do some harm.

2.

Read the following extract carefully and answer the questions that follow:Pistol in his left hand, pistol in his right,And he held in his teeth a cutlass bright, His beard was black, one leg was wood; It was clear that the pirate meant no good1. What did the pirate have in his hands?(i) The pirate had treasure in his hand.(ii) The pirate had gems in his hand.(iii) The pirate had flowers in his hand.(iv) The pirate had pistols in his hand.2. What was in the pirate's teeth?(i) The pirate had a sword in his teeth.(ii) The pirate had gold in his teeth.(iii) The pirate had a decay in his teeth.(iv) The pirate had silver in his teeth.3. How does the poet describe the pirate's beard and leg?(i) The poet describes his beard as white and leg was wooden.(ii) The poet describes his beard as black and leg was tin.(iii) The poet describes his beard as black and leg was wooden.(iv) The poet describes his beard as black and leg was metal.4. Did the pirate come for something good?(i) Yes, he came for something good.(ii) No, he did not come for anything good.(iii) No, he came to play the animals.(iv) Yes, he came for giving presents.5. What does the expression 'the pirate meant no good' convey?(i) It means that from the pirate's expression it is clear that he had gone there to do some harm.(ii) It means that from the pirate's expression it is clear that he had gone there to do some good.(iii) It means that from the pirate's expression it is clear that he had gone there to play.(iv) It means that from the pirate's expression it is clear that he had gone there to tease them.

Answer»

1. (iv) The pirate had pistols in his hand.

2. (i) The pirate had a sword in his teeth.

3. (iii) The poet describes his beard as black and leg was wooden.

4. (ii) No, he did not come for anything good.

5. (i) It means that from the pirate's expression it is clear that he had gone there to do some harm.

Discussion

3.	Name the author of the essay ‘Tapovan’.
Answer» Rabindranath Tagore .

Discussion

4.	According to the women of Adwani village, what did the forest bear?
Answer» According to the women of Adwani, the forests bare soil, water and pure air which sustain the and all she bears.

Discussion

5.	The real value of the forest for women was a. timber from dead trees.b. source of basic need. c. springs and streams.
Answer» (b, c) source of basic need/ springs and streams.

Discussion

6.	Name 2 main groups of solids.
Answer» Amorphous and Crystalline.

Discussion

7.	What are anisotropic materials?
Answer» The materials which have different physical properties along different directions are called anisotropic materials.

Discussion

8.	Mention the expression for Young’s modulus in the case of a stretched string.
Answer» Young’s modulus in case of a stretched string is Y = \(\frac {FL}{πr^2(ΔL)}\) F - Force acting on the wire, L - Initial length of the wire ∆L - change in length of the wire, r - radius of the wire.

8.

Mention the expression for Young’s modulus in the case of a stretched string.

Answer»

Young’s modulus in case of a stretched string is

Y = \(\frac {FL}{πr^2(ΔL)}\)

F - Force acting on the wire,

L - Initial length of the wire

∆L - change in length of the wire,

r - radius of the wire.

Discussion

9.	A copper wire is stretched by 10 N force. If radius of wire decreases by 2%, how will young's modulus of wire be affected.
Answer» Since modulus depends only on the nature of material, so its value is not changed when its radius decreases. Thus, Young's modulus of the wire remains the same.

Discussion

10.	Write down the relation between the critical angle and the refractive index of the medium.
Answer» sini_c = 1/μ Where i_c is the critical angle and μ is the refractive index of the medium.

10.

Write down the relation between the critical angle and the refractive index of the medium.

Answer»

sini_c = 1/μ

Where i_c is the critical angle and μ is the refractive index of the medium.

Discussion

11.	Things always look small on viewing through a lens. What is the nature of the lens ?
Answer» Concave lens.

Discussion

12.	Your eye contains a convex lens. Why is it unwise to look at the sun ?
Answer» It is unwise to look at the sun because the convex lens focusses a lot of sun rays into our eyes and this may damage them.

Discussion

13.	What are the important points about the uniform motion?
Answer» Following are some important points about the uniform motion: (i) The velocity in uniform motion does not depend upon the time interval (t₂ - t₁) (ii) The velocity in uniform motion is independent of the choice of origin. (iii) No force acts on the object having uniform motion. (iv) Velocity is taken to be positive when the object moves towards right of the origin and it is taken negative if the object moves towards left of the origin.

13.

What are the important points about the uniform motion?

Answer»

Following are some important points about the uniform motion:

(i) The velocity in uniform motion does not depend upon the time interval (t₂ - t₁)

(ii) The velocity in uniform motion is independent of the choice of origin.

(iii) No force acts on the object having uniform motion.

(iv) Velocity is taken to be positive when the object moves towards right of the origin and it is taken negative if the object moves towards left of the origin.

Discussion

14.	Which motion is exactly represented by ∆s = u∆t.
Answer» It represents motion with uniform velocity.

Discussion

15.	Discuss if a body moving with uniform velocity is in equilibrium.
Answer» Net force on the boy is zero.

Discussion

16.	Is it true that a body is always at rest in a frame which is fixed to the body itself?
Answer» Yes, because relative velocity with respect to frame of reference is zero.

Discussion

17.	In which frame of reference is the body always at rest?
Answer» The body is always at rest in the frame attached to it, i.e., inertial frame of reference.

Discussion

18.	Give formula: (1) Force = (2) Final velocity (v) = (3) Displacement (s) =(4) Final velocity2 (v2 ) = (5) velocity of an object moving with uniform circular motion =
Answer» (1) Mass x Acceleration = ma (2) Initial Velocity + (Acceleration x Time) = u + at (3) (Initial Velocity x Time) + T/2 x Acceleration x Time² = (ut) + 1/2 at² (4) Initial Velocity² + 2 x Acceleration x Displacement = u² + 2as (5) \(\cfrac{Circumference}{Time}=\cfrac{2 \pi r}{t}\)

18.

Give formula: (1) Force = (2) Final velocity (v) = (3) Displacement (s) =(4) Final velocity2 (v2 ) = (5) velocity of an object moving with uniform circular motion =

Answer»

(1) Mass x Acceleration = ma

(2) Initial Velocity + (Acceleration x Time) = u + at

(3) (Initial Velocity x Time) + T/2 x Acceleration x

Time² = (ut) + 1/2 at²

(4) Initial Velocity² + 2 x Acceleration x Displacement = u² + 2as

(5) \(\cfrac{Circumference}{Time}=\cfrac{2 \pi r}{t}\)

Discussion

19.	Give scientific reasons:Even though the magnitudes of action force and reaction force are equal and their directions are opposite, their effects do not get cancelled.
Answer» Action and reaction forces act on different bodies. They don’t act on the same body, hence they cannot cancel each other’s effect. Hence, even though the magnitudes of action force and reaction force are equal, they do not cancel each other.

Discussion

20.	Give scientific reasons:Motion is relative.
Answer» The motion of an object depends on the observer, hence a body may appear moving for one person and at the same time at rest for another one. Hence, motion is relative.

Discussion

21.	Give scientific reasons:When an object falls freely to the ground, its acceleration is uniform.
Answer» When the body falls freely to the ground, there are equal changes in velocity of the body in equal intervals of time. Thus the acceleration of the body is constant, and it possesses uniform acceleration.

Discussion

22.

Clarify the differences between "Distance and displacement".

Answer»

Distance	Displacement
(i) Distance is the length of the actual path travelled by an object.	(i) Displacement is the minimum distance between the starting and finishing points.
(ii) It is a scalar quantity.	(ii) It is a vector quantity.
(iii) It is either equal to or greater than displacement.	(iii) It is either equal to or less than distance.
(iv) Distance travelled is always positive.	(iv) Displacement may be positive or negative or zero.

Discussion

23.

Uniform and non-uniform motion.

Answer»

Uniform motion	Non-uniform motion
(i) If an object covers equal distances in equal intervals of time it is said to be in uniform motion.	(i) If an object moves unequal distances in equal intervals of time, its motion is said to be nonuniform.
(ii) Distance – time graph for uniform motion is a straight line.	(ii) Distance – time graph for non-uniform motion is not a straight line.
(iii) In uniform motion, acceleration is zero.	(iii) In non-uniform motion acceleration is non-zero.

Discussion

24.	दो अंकों की एक संख्या के दोनों अंकों का गुणनफल 14 है। यदि संख्या में 45 जोड़ा जाये तो अंकों के स्थान बदल जाते हैं। संख्या ज्ञात कीजिए।
Answer» माना, इहाई का अंक = x तथा इकाई का अंक = y है। तब अभीष्ट संख्या = (10x + y) प्रश्नानुसार, पहली शर्त xy = 14 या y = 14/x …(1) तथा दूसरी शर्त, 10x + y + 45 = 10 y + x 10x + y – 10y – x = – 45 या 9x – 9y = – 45 9(x – y) = – 45 या x – y = -45/9 या x – y = – 5 …(2) समी० (1) से y का मान समी० (2) में रखने पर, x – -14/x = -5 या \(\frac{x^2-14}{x}\) = -5 x² – 14 = – 5x x² + 5x – 14 = 0 या x² + 7x – 2x – 14 = 0 x(x + 7) – 2(x + 7) = 0 (x + 7)(x – 2) – 0 x + 7 = 0 तथा x – 2 = 0 x = – 7 (अमान्य) x = 2 x का मान समी० (1) में रखने पर, y = 14/2 = 7 अतः अभीष्ट संख्या = 10x + y = 10 × 2 + 7 = 20 + 7 = 27

24.

दो अंकों की एक संख्या के दोनों अंकों का गुणनफल 14 है। यदि संख्या में 45 जोड़ा जाये तो अंकों के स्थान बदल जाते हैं। संख्या ज्ञात कीजिए।

Answer»

माना, इहाई का अंक = x तथा इकाई का अंक = y है।

तब अभीष्ट संख्या = (10x + y)

प्रश्नानुसार,

पहली शर्त xy = 14

या y = 14/x …(1)

तथा दूसरी शर्त, 10x + y + 45 = 10 y + x

10x + y – 10y – x = – 45

या 9x – 9y = – 45

9(x – y) = – 45

या x – y = -45/9

या x – y = – 5 …(2)

समी० (1) से y का मान समी० (2) में रखने पर,

x – -14/x = -5

या \(\frac{x^2-14}{x}\) = -5

x² – 14 = – 5x

x² + 5x – 14 = 0

या x² + 7x – 2x – 14 = 0

x(x + 7) – 2(x + 7) = 0

(x + 7)(x – 2) – 0

x + 7 = 0 तथा x – 2 = 0

x = – 7 (अमान्य) x = 2

x का मान समी० (1) में रखने पर,

y = 14/2 = 7

अतः अभीष्ट संख्या = 10x + y = 10 × 2 + 7

= 20 + 7 = 27

Discussion

25.	What is meant by moment of a force?
Answer» The turning effect of force acting on a body about an axis is called moment of force.

Discussion

26.	Name the factors on which the turning effect of a force depend on.
Answer» Turning effect of force depends on- 1. The magnitude of the force applied and 2. The distance of line of action of the force from the axis of rotation.

26.

Name the factors on which the turning effect of a force depend on.

Answer»

Turning effect of force depends on-

1. The magnitude of the force applied and

2. The distance of line of action of the force from the axis of rotation.

Discussion

27.	The length of the staircase is 5\(\frac{1}{2}\) m. If one step is set at \(\frac{1}{4}\) m. then, how many steps will be there in the staircase?
Answer» Given length of staircase = 5\(\frac{1}{2}\) m = \(\frac{11}{2}\) m Length of each step = \(\frac{1}{4}\) m Length of each step × number of steps = length of staircase \(\frac{1}{4}\) × Number of steps = \(\frac{11}{2}\) Number of steps = \(\frac{11}{2}\) ÷ \(\frac{1}{4}\) = \(\frac{11}{2}\) × \(\frac{4}{1}\) = 11 × 2 = 22 ∴ Number of steps in the staircase = 22

27.

The length of the staircase is 5\(\frac{1}{2}\) m. If one step is set at \(\frac{1}{4}\) m. then, how many steps will be there in the staircase?

Answer»

Given length of staircase = 5\(\frac{1}{2}\) m = \(\frac{11}{2}\) m

Length of each step = \(\frac{1}{4}\) m

Length of each step × number of steps = length of staircase

\(\frac{1}{4}\) × Number of steps = \(\frac{11}{2}\)

Number of steps = \(\frac{11}{2}\) ÷ \(\frac{1}{4}\) = \(\frac{11}{2}\) × \(\frac{4}{1}\) = 11 × 2 = 22

∴ Number of steps in the staircase = 22

Discussion

28.	हल करें –130 x 28 = 130 x (20 + 8)
Answer» 130 x 28 = 130 x (20 + 8) = 130 x 20 + 130 x 8 = 2600 + 1040 = 3640

28.

हल करें –130 x 28 = 130 x (20 + 8)

Answer»

130 x 28 = 130 x (20 + 8)

= 130 x 20 + 130 x 8

= 2600 + 1040

= 3640

Discussion

29.	हल करें –105 x 15 = 105 x (10 + 5)
Answer» 105 x 15 = 105 x (10 + 5) = 105 x 10 + 105 x 5 = 1050 + 525 = 1575

29.

हल करें –105 x 15 = 105 x (10 + 5)

Answer»

105 x 15 = 105 x (10 + 5)

= 105 x 10 + 105 x 5

= 1050 + 525

= 1575

Discussion

30.	हल करें –246 x 18 = 246 x (10 + 8)
Answer» 246 x 18 = 246 x (10 + 8) = 246 x 10 + 246 x 8 = 2460 + 1968 = 4428

30.

हल करें –246 x 18 = 246 x (10 + 8)

Answer»

246 x 18 = 246 x (10 + 8)

= 246 x 10 + 246 x 8

= 2460 + 1968

= 4428

Discussion

31.	A body of 2 kg falls from rest. What will be its kinetic energy during the fall at the end of 2s?
Answer» Mass of body = 2 kg Initial velocity, u = 0 Time taken, t = 2 s Acceleration due to gravity, g = 10 m/s² Final velocity, v = ? Using the first equation of motion, v = u + gt = 20 m/s KE = 1/2 mv²= 400 J

31.

A body of 2 kg falls from rest. What will be its kinetic energy during the fall at the end of 2s?

Answer»

Mass of body = 2 kg

Initial velocity, u = 0

Time taken, t = 2 s

Acceleration due to gravity, g = 10 m/s²

Final velocity, v = ?

Using the first equation of motion,

v = u + gt = 20 m/s

KE = 1/2 mv²= 400 J

Discussion

32.	हल करें –132 x 12 = 132 x (10 + 2)
Answer» 132 x 12 = 132 x (10 + 2) = 132 × 10 + 132 × 2 = 1320 + 264 = 1584

32.

हल करें –132 x 12 = 132 x (10 + 2)

Answer»

132 x 12 = 132 x (10 + 2)

= 132 × 10 + 132 × 2

= 1320 + 264

= 1584

Discussion

33.	1 से 12 तक की संख्याओं का योग ।
Answer» 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 + 11 + 12 = 78

Discussion

34.	On a level road, a scooterist applies brakes to slow down from a speed of 10 m/s to 5 m/s. If the mass of the scooterist and the scooter be 150kg, calculate the work done by the brakes.
Answer» Mass of scooter + scooterist = 150 kg Initial velocity, u = 10 m/s Final velocity, v = 5 m/s Retardation = a Distance travelled = s Using third equation of motion, v² – u² = 2as as = -75/2 Work done, W = Fs W = mas W = -5625 J Negative sign is used to show that force applied by the brakes is acting opposite direction of motion.

34.

On a level road, a scooterist applies brakes to slow down from a speed of 10 m/s to 5 m/s. If the mass of the scooterist and the scooter be 150kg, calculate the work done by the brakes.

Answer»

Mass of scooter + scooterist = 150 kg

Initial velocity, u = 10 m/s

Final velocity, v = 5 m/s

Retardation = a

Distance travelled = s

Using third equation of motion,

v² – u² = 2as

as = -75/2

Work done, W = Fs

W = mas

W = -5625 J

Negative sign is used to show that force applied by the brakes is acting opposite direction of motion.

Discussion

35.	हल करें –54 x 12 = 54 x (10 + 2)
Answer» 54 x 12 = 54 x (10 + 2) = 54 x 10 + 54 x 2 = 540 + 108 = 648

35.

हल करें –54 x 12 = 54 x (10 + 2)

Answer»

54 x 12 = 54 x (10 + 2)

= 54 x 10 + 54 x 2

= 540 + 108

= 648

Discussion

36.	हल करें –1. 22 x 3 2. 30 x 53. 48 x 74. 63 x 9 5. 74 x 86. 88 x 4
Answer» 1. 66 2. 150 3. 336 4. 569 5. 592 6. 352

36.

हल करें –1. 22 x 3 2. 30 x 53. 48 x 74. 63 x 9 5. 74 x 86. 88 x 4

Answer»

1. 66

2. 150

3. 336

4. 569

5. 592

6. 352

Discussion

37.	एक विद्यालय में कुल 132 बच्चे हैं। सोमवार को हर बच्चे को 2 केले दिए गए। कुल कितने केले बाँटे गए?
Answer» 132 x 2 = 264

Discussion

38.	14 कार में कितने पहिए होंगे ?
Answer» 14 कार में पहिए होंगे = 14 x 4 = 56

Discussion

39.	5 साइकिल में कितने टायर होंगे ?
Answer» 5 साइकिल में टायर = 5 x 2 = 10

Discussion

40.	हल करें –42 x 23 = 42 x (20 + 3)
Answer» 42 x 23 = 42 x (20 + 3) = 42 x 20 + 42 x 3 = 840 + 126 = 966

40.

हल करें –42 x 23 = 42 x (20 + 3)

Answer»

42 x 23 = 42 x (20 + 3)

= 42 x 20 + 42 x 3

= 840 + 126

= 966

Discussion

41.	What is the main difference in the wiring of an electric bulb and a socket for using an electric iron in a domestic electric circuit ? What is the reason for this difference ?
Answer» No earth connection is required for the bulb connection as it does not draw heavy current and we hardly touch it. A socket for using an electric iron has an earth connection because electric iron has a metallic body and draws a large current.

Discussion

42.	Explain why, it is more dangerous to touch the live wire of a mains supply rather than the neutral wire.
Answer» It is more dangerous to touch the live wire rather than the neutral wire because live wire has a high potential of 220V, where as neutral wire has zero potential

Discussion

43.	What is the electric potential of the neutral wire in a mains supply cable ?
Answer» Solution : The electric potential of the neutral wire in a mains supply cable Zero volt.

43.

What is the electric potential of the neutral wire in a mains supply cable ?

Answer»

Solution :

The electric potential of the neutral wire in a mains supply cable Zero volt.

Discussion

44.	Write the advantages and disadvantages of platinum resistance thermometer?
Answer» Advantages of Platinum Resistance thermometer:- 1) High accuracy of measurement 2) Measurements of temperature can be made over a wide range of temperature i.e. from – 260⁰C to 1200⁰C. → Disadvantages of Platinum Resistance thermometer:- 1) High Cost 2) Requires additional equipment such as bridge circuit, Power supply etc.

44.

Write the advantages and disadvantages of platinum resistance thermometer?

Answer»

Advantages of Platinum Resistance thermometer:-

1) High accuracy of measurement

2) Measurements of temperature can be made over a wide range of temperature i.e. from – 260⁰C to 1200⁰C.

→ Disadvantages of Platinum Resistance thermometer:-

1) High Cost

2) Requires additional equipment such as bridge circuit, Power supply etc.

Discussion

45.	Study the diagram given alongside and then answer the questions that follow:(a) Name the region in the kidney where the above structure is present?(b) Name the parts labelled 1, 2, 3 and 4.(c) Name the stages involved in the formation of urine(d) What is the technical term given to the process occurring in 2 and 3? Briefly describe the process.
Answer» (a) The structure is a Bowman's capsule, which is part of the nephron. The Bowman's capsule is found in the cortex of the kidney. (b) 1 - Afferent arteriole 2 - Glomerulus 3 - Bowman's capsule 4 - Efferent arteriole (c) Urine formation occurs in two steps - ultrafiltration and reabsorption. (d) The process occurring in 2 and 3 is known as ultrafiltration. In the glomerulus, the blood flows under high pressure because of the narrow lumen of the capillary network of the glomerulus. This forces most of the components (both waste and useable materials) of the blood out of the capillaries. This process of the filtration of blood under high pressure in the Bowman's capsule is known as ultrafiltration.

45.

Study the diagram given alongside and then answer the questions that follow:(a) Name the region in the kidney where the above structure is present?(b) Name the parts labelled 1, 2, 3 and 4.(c) Name the stages involved in the formation of urine(d) What is the technical term given to the process occurring in 2 and 3? Briefly describe the process.

Answer»

(a) The structure is a Bowman's capsule, which is part of the nephron. The Bowman's capsule is found in the cortex of the kidney.

(b) 1 - Afferent arteriole

2 - Glomerulus

3 - Bowman's capsule

4 - Efferent arteriole

(c) Urine formation occurs in two steps - ultrafiltration and reabsorption.

(d) The process occurring in 2 and 3 is known as ultrafiltration.

In the glomerulus, the blood flows under high pressure because of the narrow lumen of the capillary network of the glomerulus. This forces most of the components (both waste and useable materials) of the blood out of the capillaries. This process of the filtration of blood under high pressure in the Bowman's capsule is known as ultrafiltration.

Discussion

46.	Name the type of chemical substances that control the growth in plants.
Answer» Phytohormones.

Discussion

47.	Look at the figure given bellow, it is a section of human kidney as seen from the front.(a) Is it the left kidney or the right one? Give reason in support of your answer.(b) Is it a longitudinal section or a cross-section?(c) Name the parts numbered 1-5(d) which area/part (give its name and the number given on the diagram) contains the following respectively:(i) malpighian capsule(ii) The pyramids(iii) Freshly collected urine
Answer» (a) The image shown can be left or right kidney. As the right kidney is slightly lower than the left one, so we need to have the images of both the kidneys for comparison. (b) It is a longitudinal section of the kidney. (c) 1-renal artery, 2-renal vein, 3-ureter, 4-cortex, 5-pelvis (d) (i) 4/cortex (ii) medulla (iii) 5/pelvis

47.

Look at the figure given bellow, it is a section of human kidney as seen from the front.(a) Is it the left kidney or the right one? Give reason in support of your answer.(b) Is it a longitudinal section or a cross-section?(c) Name the parts numbered 1-5(d) which area/part (give its name and the number given on the diagram) contains the following respectively:(i) malpighian capsule(ii) The pyramids(iii) Freshly collected urine

Answer»

(a) The image shown can be left or right kidney. As the right kidney is slightly lower than the left one, so we need to have the images of both the kidneys for comparison.

(b) It is a longitudinal section of the kidney.

(c) 1-renal artery, 2-renal vein, 3-ureter, 4-cortex, 5-pelvis

(d)

(i) 4/cortex

(ii) medulla

(iii) 5/pelvis

Discussion

48.	A moving charge produces(a) electric field only (b) magnetic field only(c) both of them (d) none of them.
Answer» (c) both of them

Discussion

49.	A charged particle is moved along a magnetic field line. The magnetic force on the particle is (a) along its velocity (b) opposite to its velocity (c) perpendicular to its velocity (d) zero.
Answer» The correct answer is (d) zero.

Discussion

50.	Consider the situation shown in figure (35-Q1). The straight wire is fixed but the loop can move under magnetic force. The loop will (a) remain stationary (b) move towards the wire (c) move away from the wire (d) rotate about the wire.
Answer» (b) move towards the wire

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

“Then the situation changed.” What is being referred to ?

Name the author of the essay ‘Tapovan’.

According to the women of Adwani village, what did the forest bear?

The real value of the forest for women was a. timber from dead trees.b. source of basic need. c. springs and streams.

Name 2 main groups of solids.

What are anisotropic materials?

Mention the expression for Young’s modulus in the case of a stretched string.

A copper wire is stretched by 10 N force. If radius of wire decreases by 2%, how will young's modulus of wire be affected.

Write down the relation between the critical angle and the refractive index of the medium.

Things always look small on viewing through a lens. What is the nature of the lens ?

Your eye contains a convex lens. Why is it unwise to look at the sun ?

What are the important points about the uniform motion?

Which motion is exactly represented by ∆s = u∆t.

Discuss if a body moving with uniform velocity is in equilibrium.

Is it true that a body is always at rest in a frame which is fixed to the body itself?

In which frame of reference is the body always at rest?

Give formula: (1) Force = (2) Final velocity (v) = (3) Displacement (s) =(4) Final velocity2 (v2 ) = (5) velocity of an object moving with uniform circular motion =

Give scientific reasons:Even though the magnitudes of action force and reaction force are equal and their directions are opposite, their effects do not get cancelled.

Give scientific reasons:Motion is relative.

Give scientific reasons:When an object falls freely to the ground, its acceleration is uniform.

Clarify the differences between "Distance and displacement".

Uniform and non-uniform motion.

What is meant by moment of a force?

Name the factors on which the turning effect of a force depend on.

The length of the staircase is 5\(\frac{1}{2}\) m. If one step is set at \(\frac{1}{4}\) m. then, how many steps will be there in the staircase?

हल करें –130 x 28 = 130 x (20 + 8)

हल करें –105 x 15 = 105 x (10 + 5)

हल करें –246 x 18 = 246 x (10 + 8)

A body of 2 kg falls from rest. What will be its kinetic energy during the fall at the end of 2s?

हल करें –132 x 12 = 132 x (10 + 2)

1 से 12 तक की संख्याओं का योग ।

On a level road, a scooterist applies brakes to slow down from a speed of 10 m/s to 5 m/s. If the mass of the scooterist and the scooter be 150kg, calculate the work done by the brakes.

हल करें –54 x 12 = 54 x (10 + 2)

हल करें –1. 22 x 3 2. 30 x 53. 48 x 74. 63 x 9 5. 74 x 86. 88 x 4

एक विद्यालय में कुल 132 बच्चे हैं। सोमवार को हर बच्चे को 2 केले दिए गए। कुल कितने केले बाँटे गए?

14 कार में कितने पहिए होंगे ?

5 साइकिल में कितने टायर होंगे ?

हल करें –42 x 23 = 42 x (20 + 3)

What is the main difference in the wiring of an electric bulb and a socket for using an electric iron in a domestic electric circuit ? What is the reason for this difference ?

Explain why, it is more dangerous to touch the live wire of a mains supply rather than the neutral wire.

What is the electric potential of the neutral wire in a mains supply cable ?

Write the advantages and disadvantages of platinum resistance thermometer?

Name the type of chemical substances that control the growth in plants.

A moving charge produces(a) electric field only (b) magnetic field only(c) both of them (d) none of them.

A charged particle is moved along a magnetic field line. The magnetic force on the particle is (a) along its velocity (b) opposite to its velocity (c) perpendicular to its velocity (d) zero.

Consider the situation shown in figure (35-Q1). The straight wire is fixed but the loop can move under magnetic force. The loop will (a) remain stationary (b) move towards the wire (c) move away from the wire (d) rotate about the wire.