6277 + Interview Questions in Physics Page 7 InterviewSolution

301.	Fill in the blanks. (a) During conduction, particles of the substance ………… their place. (b) In a convection current, warm air travels ………… . (c) Copper is a better ………… of heat than ………… .
Answer» Fill in the blanks. (a) During conduction, particles of the substance ………… their place. (b) In a convection current, warm air travels ………… . (c) Copper is a better ………… of heat than ………… .

301.

Fill in the blanks. (a) During conduction, particles of the substance ………… their place. (b) In a convection current, warm air travels ………… . (c) Copper is a better ………… of heat than ………… .

Answer»

Fill in the blanks.

(a) During conduction, particles of the substance ………… their place.

(b) In a convection current, warm air travels ………… .

(c) Copper is a better ………… of heat than ………… .

302.	what will happen to a gas if it is adiabatically expanded at 600K if its boyle's temp. is 290K
Answer» what will happen to a gas if it is adiabatically expanded at 600K if its boyle's temp. is 290K

Discussion

303.	Explain emf and terminal voltage
Answer» Explain emf and terminal voltage

Discussion

304.	Why is maximum emf not produced when the plane of the closed coil is held perpendicular to the external magnetic field ?
Answer» Why is maximum emf not produced when the plane of the closed coil is held perpendicular to the external magnetic field ?

Discussion

305.	What sort of storm is shaped like a funnel and is very destructive when it touches down?
Answer» What sort of storm is shaped like a funnel and is very destructive when it touches down?

Discussion

306.	What effect can a force produce on a body which is not allowed to move ?
Answer» What effect can a force produce on a body which is not allowed to move ?

Discussion

307.	1. Is distill water is a good conductor or bad
Answer» 1. Is distill water is a good conductor or bad

Discussion

308.	In an announcement on a railway station, a passanger hears that the last train has passed the station t1=30min earlier than his train. On next station, another announcement reveals him that the first train arrives t2=20 min earlier than his train. The distance between stations is S=20km. Reading time from his watch the passanger calculates average speed of his train to be Vp=60km/h relying on the announcement and the passanger calculations, determine th average speed V of first train.
Answer» In an announcement on a railway station, a passanger hears that the last train has passed the station t1=30min earlier than his train. On next station, another announcement reveals him that the first train arrives t2=20 min earlier than his train. The distance between stations is S=20km. Reading time from his watch the passanger calculates average speed of his train to be Vp=60km/h relying on the announcement and the passanger calculations, determine th average speed V of first train.

Discussion

309.	26. The side length of the base of a square pyramid is 4. If its height is 9, what is its volume?
Answer» 26. The side length of the base of a square pyramid is 4. If its height is 9, what is its volume?

Discussion

310.	Which among these is an example of electric energy being involved?
Answer» Which among these is an example of electric energy being involved?

Discussion

311.	Question 16 Fill in the blanks and complete the story selecting words from the box given here. cold, demand, leaders, dry, hot, scarcity, workers, wet, oceans, harvesting, rivers Rajasthan is a ___ and dry place. The challenge of natural ___ of water was met by a successful experiment. A band of social ___ had transformed a ___ area into a green place. They have revived five dried-up ___ by constructing water ___ structures
Answer» Question 16 Fill in the blanks and complete the story selecting words from the box given here. cold, demand, leaders, dry, hot, scarcity, workers, wet, oceans, harvesting, rivers Rajasthan is a ___ and dry place. The challenge of natural ___ of water was met by a successful experiment. A band of social ___ had transformed a ___ area into a green place. They have revived five dried-up ___ by constructing water ___ structures

311.

Question 16 Fill in the blanks and complete the story selecting words from the box given here. cold, demand, leaders, dry, hot, scarcity, workers, wet, oceans, harvesting, rivers Rajasthan is a _ and dry place. The challenge of natural _ of water was met by a successful experiment. A band of social _ had transformed a _ area into a green place. They have revived five dried-up _ by constructing water _ structures

Answer»

Question 16

Fill in the blanks and complete the story selecting words from the box given here.
cold, demand, leaders, dry, hot, scarcity, workers, wet, oceans, harvesting, rivers
Rajasthan is a ___ and dry place. The challenge of natural ___ of water was met by a successful experiment. A band of social ___ had transformed a ___ area into a green place. They have revived five dried-up ___ by constructing water ___ structures

Discussion

312.	The magnetic field at a distance of 2cm from the axis of a straight conducter carrying current is 12mT. The current in a con ducter in ampere is
Answer» The magnetic field at a distance of 2cm from the axis of a straight conducter carrying current is 12mT. The current in a con ducter in ampere is

Discussion

313.	There is a thin metal plate having length, breadth, and thickness as 2M mm, 2K mm and 1 mm, respectively. If ‘N’ plates are placed one on top of the other, then what is the object formed. Also, find its volume in mm3?
Answer» There is a thin metal plate having length, breadth, and thickness as 2M mm, 2K mm and 1 mm, respectively. If ‘N’ plates are placed one on top of the other, then what is the object formed. Also, find its volume in $m m^{3}$ ?

Discussion

314.	Why do we see different phases of the moon?
Answer» Why do we see different phases of the moon?

Discussion

315.	Can use please make me understand the heat transfer by convection in refrigerators.... Got this doubt while reading my textbook
Answer» Can use please make me understand the heat transfer by convection in refrigerators.... Got this doubt while reading my textbook

Discussion

316.	A free electron is placed in the path of a plane electromagnetic wave. The electron will start moving (1) along the electric field (2) along the magnetic field (3) along the direction of propagation of the wave (4) in a plane containing the magnetic field and the direction of propagation
Answer» A free electron is placed in the path of a plane electromagnetic wave. The electron will start moving (1) along the electric field (2) along the magnetic field (3) along the direction of propagation of the wave (4) in a plane containing the magnetic field and the direction of propagation

316.

A free electron is placed in the path of a plane electromagnetic wave. The electron will start moving (1) along the electric field (2) along the magnetic field (3) along the direction of propagation of the wave (4) in a plane containing the magnetic field and the direction of propagation

Answer»

A free electron is placed in the path of a plane electromagnetic wave. The electron will start moving

(1) along the electric field

(2) along the magnetic field

(3) along the direction of propagation of the wave

(4) in a plane containing the magnetic field and the direction of propagation

Discussion

317.	A paper is in the form of a rectangle ABCD where AB = 22 cm and BC = 14 cm. A semicircle portion with BC as diameter is cut off. Find the area of the remaining paper in cm2.
Answer» A paper is in the form of a rectangle ABCD where AB = 22 cm and BC = 14 cm. A semicircle portion with BC as diameter is cut off. Find the area of the remaining paper in $c m^{2}$ .

Discussion

318.	if a copper wire is stretched ti 0.1% longer; what is the percentage increace in the resis†an ce of the wire
Answer» if a copper wire is stretched ti 0.1% longer; what is the percentage increace in the resis†an ce of the wire

Discussion

319.	Question 11When a sound is reflected from a distant object, an echo is produced. Let the distance between the reflecting surface and the source of sound production remains the same. Do you hear echo sound on a hotter day?
Answer» Question 11 When a sound is reflected from a distant object, an echo is produced. Let the distance between the reflecting surface and the source of sound production remains the same. Do you hear echo sound on a hotter day?

Discussion

320.	The splitting of line into groups under the effect of electric or magnetic field is called
Answer» The splitting of line into groups under the effect of electric or magnetic field is called

Discussion

321.	Should we use black tent during summer and white tent during winter? Why?
Answer» Should we use black tent during summer and white tent during winter? Why?

Discussion

322.	Water stored in dams can be utilized to generate electricity. Explain briefly.
Answer» Water stored in dams can be utilized to generate electricity. Explain briefly.

Discussion

323.	Choose the correct option:Statement 1: the conventional flow of current in a circuit is from postive terminal to nagative terminal.Statement 2: The actual direction of flow of electrons is opposite to the conventional direction of the flow of current.
Answer» Choose the correct option: Statement 1: the conventional flow of current in a circuit is from postive terminal to nagative terminal. Statement 2: The actual direction of flow of electrons is opposite to the conventional direction of the flow of current.

Discussion

324.	Two paths lead to the top of a hill. One is shorter and steeper and the second one is longer but less steep. The gain in potential energy is more for which of the two paths?
Answer» Two paths lead to the top of a hill. One is shorter and steeper and the second one is longer but less steep. The gain in potential energy is more for which of the two paths?

Discussion

325.	Identify the subordinating conjunction in the sentence. Gauri had to take care of her younger brother and sister after their father passed away.
Answer» Identify the subordinating conjunction in the sentence. Gauri had to take care of her younger brother and sister after their father passed away.

325.

Identify the subordinating conjunction in the sentence. Gauri had to take care of her younger brother and sister after their father passed away.

Answer»

Identify the subordinating conjunction in the sentence.

Gauri had to take care of her younger brother and sister after their father passed away.

Discussion

326.	Write the answers in your words.(a) How is an electromagnet made?(b) Write the properties of a magnet.(c) What are the practical uses of a magnet?
Answer» Write the answers in your words. (a) How is an electromagnet made? (b) Write the properties of a magnet. (c) What are the practical uses of a magnet?

Discussion

327.	Slope b/w graph of 1/yA and 1/xA where yA=Mole fraction ofA component in vapour. phase; xA=Mole fraction of A component in solution and P^° A= Vapour pressure of A. component in pure state ;P^° B =Vapour pressure of B component in pure state 1)P^° A/P^° B. 2)P^° B/P^° A. 3)P^° A\ast P^° B. 4)P^° A+P^° B
Answer» Slope b/w graph of 1/yA and 1/xA where yA=Mole fraction ofA component in vapour. phase; xA=Mole fraction of A component in solution and P^° A= Vapour pressure of A. component in pure state ;P^° B =Vapour pressure of B component in pure state 1)P^° A/P^° B. 2)P^° B/P^° A. 3)P^° A\ast P^° B. 4)P^° A+P^° B

Discussion

328.	Which property of the electricity is responsible for use of Fuse wire in household wiring?
Answer» Which property of the electricity is responsible for use of Fuse wire in household wiring?

Discussion

329.	N identical cells are connected to form a batteryWhen the terminals of the battery are joineddirectly, current flows in the circuit. To obtainmaximum value of92, (1) All the cells should be joined in series(2) All the cells should be joined in parallelde(3) Two rows of N/2 cells each should be joined inparallel(4) N rows of N cells each should be joinedin parallel given that VN in an integer
Answer» N identical cells are connected to form a batteryWhen the terminals of the battery are joineddirectly, current flows in the circuit. To obtainmaximum value of92, (1) All the cells should be joined in series(2) All the cells should be joined in parallelde(3) Two rows of N/2 cells each should be joined inparallel(4) N rows of N cells each should be joinedin parallel given that VN in an integer

Discussion

330.	Choose the correct unit of velocity.
Answer» Choose the correct unit of velocity.

Discussion

331.	A 10^-20 kg particle is vibrating in S.H.M with time period=10^-5 sec and max. speed 10^-3 m/s.The max. displacement of particle is
Answer» A 10^-20 kg particle is vibrating in S.H.M with time period=10^-5 sec and max. speed 10^-3 m/s.The max. displacement of particle is

Discussion

332.	A plane mirror and an object approach each other with speeds of 5 ms−1 and 10 ms−1 respectively. What will be the speed of the image w.r.t. the stationary observer?
Answer» A plane mirror and an object approach each other with speeds of $5 m s^{- 1}$ and $10 m s^{- 1}$ respectively. What will be the speed of the image w.r.t. the stationary observer?

Discussion

333.	13.A small coin is resting on the bottom of a beaker filled with a liquid A Ray of light from the queen travel up to the surface of the liquid and moves along its surface. How fast is the light travelling in the liquid?
Answer» 13.A small coin is resting on the bottom of a beaker filled with a liquid A Ray of light from the queen travel up to the surface of the liquid and moves along its surface. How fast is the light travelling in the liquid?

Discussion

334.	1. Magnetic field lines around a magnet cannot intersect.2. When magnetic field lines intersect, the compass at the point of intersection can point in two different directions.Choose the correct option.
Answer» 1. Magnetic field lines around a magnet cannot intersect. 2. When magnetic field lines intersect, the compass at the point of intersection can point in two different directions. Choose the correct option.

Discussion

335.	A car shows 57300 km on its odometer when the time when the time was 8:30 a.m . what is the distance travelled by the car at 8:50 a.m if the odometer reads 57400 km? During this time what is the speed of car in km/ h ? Show the speed in km / h?
Answer» A car shows 57300 km on its odometer when the time when the time was 8:30 a.m . what is the distance travelled by the car at 8:50 a.m if the odometer reads 57400 km? During this time what is the speed of car in km/ h ? Show the speed in km / h?

Discussion

336.	Why is a thick copper strip used in a lightning conductor?
Answer» Why is a thick copper strip used in a lightning conductor?

Discussion

337.	Why spark plug not required in diesel vehicles whereas required in petrol vehicles?
Answer» Why spark plug not required in diesel vehicles whereas required in petrol vehicles?

Discussion

338.	A dog of weight 400 N climbs up a cliff of height 10 m in 20 seconds. The power expended by the dog is.
Answer» A dog of weight $400 N$ climbs up a cliff of height $10 m$ in $20 s e c o n d s$ . The power expended by the dog is.

Discussion

339.	A wall of thickness 10cm and height 5m has to be built across a play ground of length 15m. How many bricks are needed to construct the wall, if each brick has dimensions of 20cm×10cm×5cm.?
Answer» A wall of thickness $10 c m$ and height $5 m$ has to be built across a play ground of length $15 m$ . How many bricks are needed to construct the wall, if each brick has dimensions of $20 c m \times 10 c m \times 5 c m .$ ?

Discussion

340.	Since angular Momentum depends on linear momentum L=r p sin theta then how one can change and other cannot ?
Answer» Since angular Momentum depends on linear momentum L=r p sin theta then how one can change and other cannot ?

Discussion

341.	In which of the following examples of motion, can the body be considered approximately a point object: a) A railway carriage moving without jerks between two stations. b) A monkey sitting on top of a man cycling smoothly on a circular track. c) A spinning cricket ball that turns sharply on hitting the ground. d) A tumbling beaker that has slipped off the edge of a table.
Answer» In which of the following examples of motion, can the body be considered approximately a point object: a) A railway carriage moving without jerks between two stations. b) A monkey sitting on top of a man cycling smoothly on a circular track. c) A spinning cricket ball that turns sharply on hitting the ground. d) A tumbling beaker that has slipped off the edge of a table.

Discussion

342.	Question 13Boojho saw a cracker burst at night at a distance from his house. He heard the sound of the cracker a little later after seeing the cracker burst. Give reason for the delay in hearing the sound.
Answer» Question 13 Boojho saw a cracker burst at night at a distance from his house. He heard the sound of the cracker a little later after seeing the cracker burst. Give reason for the delay in hearing the sound.

Discussion

343.	28. The dimensional formula of electric potential gradient is (1) [MLT3 A1] (2) [ML2T2 A1] (3) [MLT2 A1] (4) [MLT3 A1]
Answer» 28. The dimensional formula of electric potential gradient is (1) [MLT3 A1] (2) [ML2T2 A1] (3) [MLT2 A1] (4) [MLT3 A1]

Discussion

344.	In a uniform electric field, a charge is fired in a direction perpendicular from the line of electric field then the trajectory of charge will be?
Answer» In a uniform electric field, a charge is fired in a direction perpendicular from the line of electric field then the trajectory of charge will be?

Discussion

345.	A box weighing 2 kg exerts a force of 20 N on the ground. The box covers an area of 2 m^2 on the ground. The pressure exerted by the box on the ground is:
Answer» A box weighing 2 kg exerts a force of 20 N on the ground. The box covers an area of 2 m^2 on the ground. The pressure exerted by the box on the ground is:

Discussion

346.	Arrange the following in correct order (a) Unequal heating of earth (b) Creation of pressure difference (c) Heating of air (d) Wind blows
Answer» Arrange the following in correct order (a) Unequal heating of earth (b) Creation of pressure difference (c) Heating of air (d) Wind blows

346.

Arrange the following in correct order (a) Unequal heating of earth (b) Creation of pressure difference (c) Heating of air (d) Wind blows

Answer»

Arrange the following in correct order

(a) Unequal heating of earth
(b) Creation of pressure difference
(c) Heating of air
(d) Wind blows

Discussion

347.	Three springs of a musical instrument vibrate 6, 8 and 12 times a second respectively. If all three begin to vibrate together, what will be shortest interval of time that they will start vibrating again together?
Answer» Three springs of a musical instrument vibrate 6, 8 and 12 times a second respectively. If all three begin to vibrate together, what will be shortest interval of time that they will start vibrating again together?

Discussion

348.	Find the Boolean expression B in the digital circuit given below.
Answer» Find the Boolean expression B in the digital circuit given below.

Discussion

349.	Looking into today's scenario, try to imagine the future in a world with increasing deforestation. Which of the following situation can happen when there is less number of trees?
Answer» Looking into today's scenario, try to imagine the future in a world with increasing deforestation. Which of the following situation can happen when there is less number of trees?

349.

Looking into today's scenario, try to imagine the future in a world with increasing deforestation. Which of the following situation can happen when there is less number of trees?

Answer»

Looking into today's scenario, try to imagine the future in a world with increasing deforestation. Which of the following situation can happen when there is less number of trees?

Discussion

350.	A light ray is incident on a smooth surface at an angle 45∘ with the normal to the surface. Find the angle made by the reflected ray with the incident ray. [2 MARKS]
Answer» A light ray is incident on a smooth surface at an angle $45^{\circ}$ with the normal to the surface. Find the angle made by the reflected ray with the incident ray. [2 MARKS]

Discussion

Explore topic-wise InterviewSolutions in .

Fill in the blanks. (a) During conduction, particles of the substance ………… their place. (b) In a convection current, warm air travels ………… . (c) Copper is a better ………… of heat than ………… .

what will happen to a gas if it is adiabatically expanded at 600K if its boyle's temp. is 290K

Explain emf and terminal voltage

Why is maximum emf not produced when the plane of the closed coil is held perpendicular to the external magnetic field ?

What sort of storm is shaped like a funnel and is very destructive when it touches down?

What effect can a force produce on a body which is not allowed to move ?

1. Is distill water is a good conductor or bad

26. The side length of the base of a square pyramid is 4. If its height is 9, what is its volume?

Which among these is an example of electric energy being involved?

The magnetic field at a distance of 2cm from the axis of a straight conducter carrying current is 12mT. The current in a con ducter in ampere is

There is a thin metal plate having length, breadth, and thickness as 2M mm, 2K mm and 1 mm, respectively. If ‘N’ plates are placed one on top of the other, then what is the object formed. Also, find its volume in mm3?

Why do we see different phases of the moon?

Can use please make me understand the heat transfer by convection in refrigerators.... Got this doubt while reading my textbook ​​

A free electron is placed in the path of a plane electromagnetic wave. The electron will start moving (1) along the electric field (2) along the magnetic field (3) along the direction of propagation of the wave (4) in a plane containing the magnetic field and the direction of propagation

A paper is in the form of a rectangle ABCD where AB = 22 cm and BC = 14 cm. A semicircle portion with BC as diameter is cut off. Find the area of the remaining paper in cm2.

if a copper wire is stretched ti 0.1% longer; what is the percentage increace in the resis†an ce of the wire

Question 11When a sound is reflected from a distant object, an echo is produced. Let the distance between the reflecting surface and the source of sound production remains the same. Do you hear echo sound on a hotter day?

The splitting of line into groups under the effect of electric or magnetic field is called

Should we use black tent during summer and white tent during winter? Why?

Water stored in dams can be utilized to generate electricity. Explain briefly.

Choose the correct option:Statement 1: the conventional flow of current in a circuit is from postive terminal to nagative terminal.Statement 2: The actual direction of flow of electrons is opposite to the conventional direction of the flow of current.

Two paths lead to the top of a hill. One is shorter and steeper and the second one is longer but less steep. The gain in potential energy is more for which of the two paths?

Identify the subordinating conjunction in the sentence. Gauri had to take care of her younger brother and sister after their father passed away.

Write the answers in your words.(a) How is an electromagnet made?(b) Write the properties of a magnet.(c) What are the practical uses of a magnet?

Which property of the electricity is responsible for use of Fuse wire in household wiring?

Choose the correct unit of velocity.

A 10^-20 kg particle is vibrating in S.H.M with time period=10^-5 sec and max. speed 10^-3 m/s.The max. displacement of particle is

A plane mirror and an object approach each other with speeds of 5 ms−1 and 10 ms−1 respectively. What will be the speed of the image w.r.t. the stationary observer?

13.A small coin is resting on the bottom of a beaker filled with a liquid A Ray of light from the queen travel up to the surface of the liquid and moves along its surface. How fast is the light travelling in the liquid?

1. Magnetic field lines around a magnet cannot intersect.2. When magnetic field lines intersect, the compass at the point of intersection can point in two different directions.Choose the correct option.

A car shows 57300 km on its odometer when the time when the time was 8:30 a.m . what is the distance travelled by the car at 8:50 a.m if the odometer reads 57400 km? During this time what is the speed of car in km/ h ? Show the speed in km / h?

Why is a thick copper strip used in a lightning conductor?

Why spark plug not required in diesel vehicles whereas required in petrol vehicles?

A dog of weight 400 N climbs up a cliff of height 10 m in 20 seconds. The power expended by the dog is.

A wall of thickness 10cm and height 5m has to be built across a play ground of length 15m. How many bricks are needed to construct the wall, if each brick has dimensions of 20cm×10cm×5cm.?

Since angular Momentum depends on linear momentum L=r p sin theta then how one can change and other cannot ?

Question 13Boojho saw a cracker burst at night at a distance from his house. He heard the sound of the cracker a little later after seeing the cracker burst. Give reason for the delay in hearing the sound.

28. The dimensional formula of electric potential gradient is (1) [MLT3 A1] (2) [ML2T2 A1] (3) [MLT2 A1] (4) [MLT3 A1]

In a uniform electric field, a charge is fired in a direction perpendicular from the line of electric field then the trajectory of charge will be?

A box weighing 2 kg exerts a force of 20 N on the ground. The box covers an area of 2 m^2 on the ground. The pressure exerted by the box on the ground is:

Arrange the following in correct order (a) Unequal heating of earth (b) Creation of pressure difference (c) Heating of air (d) Wind blows

Three springs of a musical instrument vibrate 6, 8 and 12 times a second respectively. If all three begin to vibrate together, what will be shortest interval of time that they will start vibrating again together?

Find the Boolean expression B in the digital circuit given below.

Looking into today's scenario, try to imagine the future in a world with increasing deforestation. Which of the following situation can happen when there is less number of trees?

A light ray is incident on a smooth surface at an angle 45∘ with the normal to the surface. Find the angle made by the reflected ray with the incident ray. [2 MARKS]

Can use please make me understand the heat transfer by convection in refrigerators.... Got this doubt while reading my textbook