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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 3301. |
26. a block of 100 N is lying on a rough horizontal surface if the coefficient of friction is 1 by root 3 the least possible force that can move on the block |
| Answer» 26. a block of 100 N is lying on a rough horizontal surface if the coefficient of friction is 1 by root 3 the least possible force that can move on the block | |
| 3302. |
A gun of mass M fires a bullet of mass m with a horizontal speed v. The gun is fitted with a concave mirror of focal length f, facing towards the receding bullet. Find the separation speed of the bullet and its image just after the gun is fired. |
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Answer» A gun of mass M fires a bullet of mass m with a horizontal speed v. The gun is fitted with a concave mirror of focal length f, facing towards the receding bullet. Find the separation speed of the bullet and its image just after the gun is fired. |
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| 3303. |
Magnetic Needle shows deflection.What causes this deflection?? |
| Answer» Magnetic Needle shows deflection.What causes this deflection?? | |
| 3304. |
Find the values of p and q such that f(x) =x^4-px^2+q has four consecutive odd integers as its roots |
| Answer» Find the values of p and q such that f(x) =x^4-px^2+q has four consecutive odd integers as its roots | |
| 3305. |
Is force required to keep a body moving? |
| Answer» Is force required to keep a body moving? | |
| 3306. |
A cylinder has an alloy piston at a temperature of 20∘C. There is all round clearance of 0.5 mm between piston and cylinder wall when the internal diameter of the cylinder is exactly 10 cm. The temperature at which it will exactly fit into the cylinder is:Given: expansion coefficient of alloy is 1.6×10−5/∘C and expansion coefficient of cylinder is 1.2×10−5/∘C. |
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Answer» A cylinder has an alloy piston at a temperature of 20∘C. There is all round clearance of 0.5 mm between piston and cylinder wall when the internal diameter of the cylinder is exactly 10 cm. The temperature at which it will exactly fit into the cylinder is: |
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| 3307. |
Question 15Is there a force of friction between the wheels of a moving train and iron rails? If yes, name the type of friction. If an air cushion can be introduced between the wheel and the rail, what effect will it have on the friction? |
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Answer» Question 15 Is there a force of friction between the wheels of a moving train and iron rails? If yes, name the type of friction. If an air cushion can be introduced between the wheel and the rail, what effect will it have on the friction? |
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| 3308. |
Observe the given figure. Which part in the human eye senses the images of various objects in the surroundings? |
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Answer» Observe the given figure.
Which part in the human eye senses the images of various objects in the surroundings? |
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| 3309. |
Which thermometer is used to measure the extreme temperatures of the day? |
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Answer» Which thermometer is used to measure the extreme temperatures of the day? |
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| 3310. |
What is the temperature reading on the thermometer as shown in the figure?36.6 |
Answer» What is the temperature reading on the thermometer as shown in the figure?
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| 3311. |
Two bullets are fired simultaneously from the samelevel and in the horizontal direction over a lake.The speed of one bullet is 196 ms-1. Assume thatair friction is negligible and the lake is still. Thebullet which is faster will, compared to the slowerone, fall in the water |
| Answer» Two bullets are fired simultaneously from the samelevel and in the horizontal direction over a lake.The speed of one bullet is 196 ms-1. Assume thatair friction is negligible and the lake is still. Thebullet which is faster will, compared to the slowerone, fall in the water | |
| 3312. |
ssuming 2s-2p mixing is NOT operative, theparamagnetic species among the following is:(a) Be 2(c) C2(b) B2(d) N2 |
| Answer» ssuming 2s-2p mixing is NOT operative, theparamagnetic species among the following is:(a) Be 2(c) C2(b) B2(d) N2 | |
| 3313. |
Question 7Which of the following solutions will not make the bulb in Fig glow?(a) Sodium chlorides(b) Copper sulphate(c) Silver nitrate(d) Sugar solution in diluted water |
Answer» Question 7 Which of the following solutions will not make the bulb in Fig glow? (a) Sodium chlorides (b) Copper sulphate (c) Silver nitrate (d) Sugar solution in diluted water |
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| 3314. |
a man of mass 50kg carries a bag of weight 40N on his shoulder .The force with which the floor pushes up his feet will be 1)882N 2)530N 3)90N 4)600N |
| Answer» a man of mass 50kg carries a bag of weight 40N on his shoulder .The force with which the floor pushes up his feet will be 1)882N 2)530N 3)90N 4)600N | |
| 3315. |
Which of the following is not a possible representation of magnetic field lines? |
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Answer» Which of the following is not a possible representation of magnetic field lines? |
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| 3316. |
A hammer of mass M kg,falls from a height of hm,onto the top of an elastic pile of mass m kg and drives it into the ground a distance a m.Find the resistance of the ground? |
| Answer» A hammer of mass M kg,falls from a height of hm,onto the top of an elastic pile of mass m kg and drives it into the ground a distance a m.Find the resistance of the ground? | |
| 3317. |
The bouncing of light from a shiny surface is called as ___ . |
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Answer» The bouncing of light from a shiny surface is called as |
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| 3318. |
Write the types of musical instruments based on the way it is played. |
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Answer» Write the types of musical instruments based on the way it is played. |
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| 3319. |
1.A portmanteau of length 1.5 m and height 1 m is carried up stairs by two men, who hold it by the front and back edges of its lower face. If the portmanteau is inclined at 30° to the horizontal and weighs 100 kg, how much of the weight each man support? |
| Answer» 1.A portmanteau of length 1.5 m and height 1 m is carried up stairs by two men, who hold it by the front and back edges of its lower face. If the portmanteau is inclined at 30° to the horizontal and weighs 100 kg, how much of the weight each man support? | |
| 3320. |
How lighting and thunder occur? What is the reason behind it? |
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Answer» How lighting and thunder occur? What is the reason behind it? |
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| 3321. |
Which of the following may be observed when a force is applied to an object? 1. An increase the speed of a moving body. 2. A change the shape of an object. 3. Å decrease the speed of a moving body. 4. A moving body coming to rest. |
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Answer» Which of the following may be observed when a force is applied to an object? 1. An increase the speed of a moving body. 2. A change the shape of an object. 3. Å decrease the speed of a moving body. 4. A moving body coming to rest. |
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| 3322. |
A massless inextensible string in the form of a loop is placed on a horizontal film of soap solution of surface tension T.If film is pierced inside the loop and it convert into a circular loop of diameter d,then the tension produced in the string is (1)Td (2)Td (3)dT (4)dT/4 |
| Answer» A massless inextensible string in the form of a loop is placed on a horizontal film of soap solution of surface tension T.If film is pierced inside the loop and it convert into a circular loop of diameter d,then the tension produced in the string is (1)Td (2)Td (3)dT (4)dT/4 | |
| 3323. |
37.A refrigerator converts 100 g of water at 20 degree celsius to ice at -10 degree celsius in 73.5 min. Calculate the average rate of heat extraction in watt. The specific heat capacity of water is 4.2 per g per K, specific latent heat of ice is 336 J per g and the specific heat capacity of ice is 2.1 J per g per K. |
| Answer» 37.A refrigerator converts 100 g of water at 20 degree celsius to ice at -10 degree celsius in 73.5 min. Calculate the average rate of heat extraction in watt. The specific heat capacity of water is 4.2 per g per K, specific latent heat of ice is 336 J per g and the specific heat capacity of ice is 2.1 J per g per K. | |
| 3324. |
Potential energy depends on: |
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Answer» Potential energy depends on: |
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| 3325. |
The middle surface of a plane mirror is covered with a dark paper. How many images of yourself will you see in the mirror if earlier you could only see one image of yourself on that mirror? |
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Answer» The middle surface of a plane mirror is covered with a dark paper. How many images of yourself will you see in the mirror if earlier you could only see one image of yourself on that mirror?
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| 3326. |
The inner side of the outer wall and outer side of the inner wall of a thermos flask is silvered. Why? |
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Answer» The inner side of the outer wall and outer side of the inner wall of a thermos flask is silvered. Why? |
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| 3327. |
At sea level , the atmospheric pressure is 1.04×10pawer5 pa . Assuming g = 10ms-2 and density of air to be uniform and equal to 1.3 kg m-3, find the height of the atmosphere. |
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Answer» At sea level , the atmospheric pressure is 1.04×10pawer5 pa . Assuming g = 10ms-2 and density of air to be uniform and equal to 1.3 kg m-3, find the height of the atmosphere. |
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| 3328. |
a stone is dropped from the top of a tree. it covers 6 m height in last 0.2 s of fall. find height of tree? |
| Answer» a stone is dropped from the top of a tree. it covers 6 m height in last 0.2 s of fall. find height of tree? | |
| 3329. |
A train with cross -sectional area st is moving with speed vt inside a long tunnel of cross - sectional area (s0=4st). Assume that almost all the air ( having density,ρ) in front of the train flows back between its sides and the walls of the tunnel. Also, the air flow with respect to the train is steady and laminar. Take the ambient pressure and that inside the train to be P0 . If the pressure in the region between the sides of the train and the tunnel wall is P then P0−P=72Nρv2t. The value of N is |
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Answer» A train with cross -sectional area st is moving with speed vt inside a long tunnel of cross - sectional area (s0=4st). Assume that almost all the air ( having density,ρ) in front of the train flows back between its sides and the walls of the tunnel. Also, the air flow with respect to the train is steady and laminar. Take the ambient pressure and that inside the train to be P0 . If the pressure in the region between the sides of the train and the tunnel wall is P then P0−P=72Nρv2t. The value of N is |
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| 3330. |
The magnitude of atmospheric pressure is equal to the pressure exerted by a : (a)76 mm tall column of mercury (b) 760 mm tall column of alcohol (c) 76 cm tall column of mercury (d)760 cm tall column of mercury |
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Answer» The magnitude of atmospheric pressure is equal to the pressure exerted by a : |
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| 3331. |
What is Superconductors ? |
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Answer» What is Superconductors ? |
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| 3332. |
find the value of d/dx (x^1/2 + 1/ x^1/2)^2 |
| Answer» find the value of d/dx (x^1/2 + 1/ x^1/2)^2 | |
| 3333. |
86. A chain of mass 10kg and length 8m is resting on a rough horizontal surface. Coefficient of friction is 0.2. A force F=15N is applied as shown. Find the length of chain on which no friction acts. |
| Answer» 86. A chain of mass 10kg and length 8m is resting on a rough horizontal surface. Coefficient of friction is 0.2. A force F=15N is applied as shown. Find the length of chain on which no friction acts. | |
| 3334. |
Write three differences between an image and a shadow. |
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Answer» Write three differences between an image and a shadow. |
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| 3335. |
A battery of 9V is connected in series resistors of 0.2oms, 0.3oms, 0.4oms, 0.5oms and 12oms respectively. The current flowing through 12oms resistor is: |
| Answer» A battery of 9V is connected in series resistors of 0.2oms, 0.3oms, 0.4oms, 0.5oms and 12oms respectively. The current flowing through 12oms resistor is: | |
| 3336. |
Question 01 (e)Fill in the blank:Sliding friction is ________than the static friction. |
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Answer» Question 01 (e) |
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| 3337. |
A: 0.1 M solution of glucose has same incrémentin the freezing point than 0.1 M solution of urea. R: K_{} for both has same value. |
| Answer» A: 0.1 M solution of glucose has same incrémentin the freezing point than 0.1 M solution of urea. R: K_{} for both has same value. | |
| 3338. |
Identify the electrical gadget in the circuit below. |
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Answer» Identify the electrical gadget in the circuit below.
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| 3339. |
In the coastal area, wind current moves from the sea towards the land during the day; but during the night it moves from land to the sea. Discuss the reason. |
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Answer» In the coastal area, wind current moves from the sea towards the land during the day; but during the night it moves from land to the sea. Discuss the reason. |
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| 3340. |
Which among the following is/are natural satellites? |
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Answer» Which among the following is/are natural satellites? |
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| 3341. |
Two small spheres with masses m1 and m2 hang on weightless, insulating threads of length l1 and l2. The two spheres carry charges of q1 and q2 respectively. The spheres hang such that they are at the same level with one another the threads are inclined at angle Q1 amd Q2 with the vertical. the angle Q1 will be equal to Q2 when. solution p |
| Answer» Two small spheres with masses m1 and m2 hang on weightless, insulating threads of length l1 and l2. The two spheres carry charges of q1 and q2 respectively. The spheres hang such that they are at the same level with one another the threads are inclined at angle Q1 amd Q2 with the vertical. the angle Q1 will be equal to Q2 when. solution p | |
| 3342. |
A block of mass10kg is pushed up on a smooth inclined plane of inclination 30degrees , so that it has acceleration 2m/s square . the applied force is |
| Answer» A block of mass10kg is pushed up on a smooth inclined plane of inclination 30degrees , so that it has acceleration 2m/s square . the applied force is | |
| 3343. |
When we try to put pressure on a plastic sheet with our finger, it doesn't tear off. However, if we use a compass it tears up very easily. Why? |
| Answer» When we try to put pressure on a plastic sheet with our finger, it doesn't tear off. However, if we use a compass it tears up very easily. Why? | |
| 3344. |
Question 2Which of the following is NOT a planet of the sun? (a) Sirius(b) Mercury(c) Saturn(d) Earth |
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Answer» Question 2 Which of the following is NOT a planet of the sun? (a) Sirius (b) Mercury (c) Saturn (d) Earth |
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| 3345. |
(uj13. The position(x) of a particle at any time(t) isgiven by\lbrack2009!x(t) 4t3-3t2+2The acceleration and velocity of the particle atany time t 2 sec are respectively(a) 16 ms and 22 ms(D) 42 ms- and 36 ms(c) 48 ins2 and 36 ms(d) 12 ms and 25 ms1 |
| Answer» (uj13. The position(x) of a particle at any time(t) isgiven by\lbrack2009!x(t) 4t3-3t2+2The acceleration and velocity of the particle atany time t 2 sec are respectively(a) 16 ms and 22 ms(D) 42 ms- and 36 ms(c) 48 ins2 and 36 ms(d) 12 ms and 25 ms1 | |
| 3346. |
In a rocket of mass 1000 kg fuel is consumed at a rate of 40 kg/s .The velocity of the gases ejected from the rocket is 5×10^4 m/s .The thrust on the rocke |
| Answer» In a rocket of mass 1000 kg fuel is consumed at a rate of 40 kg/s .The velocity of the gases ejected from the rocket is 5×10^4 m/s .The thrust on the rocke | |
| 3347. |
In an elastic material, the principal stresses are σ1 (tensile), 2σ1 (tensile) and σ1 (compressive), Maximum shear stress developed in the member is ______ σ11.5 |
Answer» In an elastic material, the principal stresses are σ1 (tensile), 2σ1 (tensile) and σ1 (compressive), Maximum shear stress developed in the member is ______ σ1
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| 3348. |
A block is traveling in a circular track of radius 7m . What will be its velocity when it takes 1 second to cover 34th of the path ( in m/s) (take π=3) |
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Answer» A block is traveling in a circular track of radius 7m . What will be its velocity when it takes 1 second to cover 34th of the path ( in m/s) (take π=3) |
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| 3349. |
Two metallic objects A and B are brought into contact but there is no heat transfer between them. What could be the possible reason for this? |
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Answer» Two metallic objects A and B are brought into contact but there is no heat transfer between them. What could be the possible reason for this? |
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| 3350. |
If liquid of density p is filled in an open cylindrical container to height h. Find the pressure at bottom? |
| Answer» If liquid of density p is filled in an open cylindrical container to height h. Find the pressure at bottom? | |
