3752 + Interview Questions in Physics Page 9 InterviewSolution

401.	When you rub your hands together, they become warm. What is this due to?
Answer» When you rub your hands together, they become warm. What is this due to?

Discussion

402.	Differentiate between plane mirror and spherical mirror?
Answer» Differentiate between plane mirror and spherical mirror?

Discussion

403.	Can a completely transparent object cast a shadow?
Answer» Can a completely transparent object cast a shadow?

Discussion

404.	Pick the image that will come next in the shrinking pattern.
Answer» Pick the image that will come next in the shrinking pattern.

Discussion

405.	What does the above symbol represent?
Answer» What does the above symbol represent?

Discussion

406.	Question 3How has the traditional use of wind and water energy been modified for our convenience?
Answer» Question 3 How has the traditional use of wind and water energy been modified for our convenience?

Discussion

407.	What is the difference between rest and motion?
Answer» What is the difference between rest and motion?

Discussion

408.	Question 6 Filament of a torch bulb is (a) A metal case. (b) Metal tip at the centre of the base. (c) Two thick wires (d) A thin wire.
Answer» Question 6 Filament of a torch bulb is (a) A metal case. (b) Metal tip at the centre of the base. (c) Two thick wires (d) A thin wire.

408.

Question 6 Filament of a torch bulb is (a) A metal case. (b) Metal tip at the centre of the base. (c) Two thick wires (d) A thin wire.

Answer»

Question 6

Filament of a torch bulb is

(a) A metal case.

(b) Metal tip at the centre of the base.

(c) Two thick wires

(d) A thin wire.

Discussion

409.	54. In a series LCR circuit which is connected to an AC voltage source choose the incorrect statement
Answer» 54. In a series LCR circuit which is connected to an AC voltage source choose the incorrect statement

Discussion

410.	Why do signs at petrol stations warn people not to use their cell phones while filling petrol in their cars?
Answer» Why do signs at petrol stations warn people not to use their cell phones while filling petrol in their cars?

Discussion

411.	Explain : Energy, work, potential energy, kinetic energy
Answer» Explain : Energy, work, potential energy, kinetic energy

411.

Explain : Energy, work, potential energy, kinetic energy

Answer»

Explain :

Energy, work, potential energy, kinetic energy

Discussion

412.	Each of the two bulbs takes 2A current at 50V supply. They are joined in series .How much resistance should be added in series with the lamps so that on connecting then with 120V supply , a current of 2A flows through each of them ?
Answer» Each of the two bulbs takes 2A current at 50V supply. They are joined in series .How much resistance should be added in series with the lamps so that on connecting then with 120V supply , a current of 2A flows through each of them ?

Discussion

413.	An ideal pulley system can lift a load of 1500 N by an effort of 300 N. The velocity ratio of the system is:
Answer» An ideal pulley system can lift a load of 1500 N by an effort of 300 N. The velocity ratio of the system is:

Discussion

414.	Why can we not measure the speed of a butterfly?
Answer» Why can we not measure the speed of a butterfly?

Discussion

415.

Earth has been assumed or imagined by the scientists as a huge magnetic dipole.Where is the north pole of the imaginary magnet inside the Earth is located ?

Answer»

Earth has been assumed or imagined by the scientists as a

huge magnetic dipole.Where is the north pole of the

imaginary magnet inside the Earth is located ?

Discussion

416.	Which of the following are forms of mechanical energy?
Answer» Which of the following are forms of mechanical energy?

Discussion

417.	Which of the following energy resources uses potential energy of water for generating electricity?
Answer» Which of the following energy resources uses potential energy of water for generating electricity?

Discussion

418.	If Geeta is moving with respect to a building and Sangeeta is at rest with respect to the same building then,
Answer» If Geeta is moving with respect to a building and Sangeeta is at rest with respect to the same building then,

Discussion

419.	Question 8 Which of the following figure shows the correct placement of a block along a scale for measuring its length? (a) (b) (c) (d)
Answer» Question 8 Which of the following figure shows the correct placement of a block along a scale for measuring its length? (a) (b) (c) (d)

419.

Question 8 Which of the following figure shows the correct placement of a block along a scale for measuring its length? (a) (b) (c) (d)

Answer»

Question 8

Which of the following figure shows the correct placement of a block along a scale for measuring its length?

(a)

(b)

(c)

(d)

Discussion

420.	Question 11Two boys are riding their bicycles on the same concrete road. One has new tyres on his bicycle while the other has tyres that are old and used. Which of them is more likely to skid while moving through a patch of the road which has lubricating oil spilled over it?
Answer» Question 11 Two boys are riding their bicycles on the same concrete road. One has new tyres on his bicycle while the other has tyres that are old and used. Which of them is more likely to skid while moving through a patch of the road which has lubricating oil spilled over it?

Discussion

421.	15. A set of 24 tuning fork are so arranged that each gives 44 beats per second with the previous one and the last sounds the octave of the first. then the frequency of the last fork is:
Answer» 15. A set of 24 tuning fork are so arranged that each gives 44 beats per second with the previous one and the last sounds the octave of the first. then the frequency of the last fork is:

Discussion

422.	Here are the shadows of some 3-D objects, when seen under the lamp of the overhead projector. Identify the solid (s) that match each shadow. (There may be multiple answers for these!)
Answer» Here are the shadows of some 3-D objects, when seen under the lamp of the overhead projector. Identify the solid (s) that match each shadow. (There may be multiple answers for these!)

Discussion

423.	How much is the weight of an object on the moon as compared to its weight on the earth? Give a reason for your answer.
Answer» How much is the weight of an object on the moon as compared to its weight on the earth? Give a reason for your answer.

Discussion

424.	A number of little droplets of water, each of radius 0.1 mm, coalesce to form a single drop of radius 1 mm. Assume the surface tension of water T=0.07N/m and the mechanical equivalent of heat J=4.2 J/cal. The change in temperature is (answer upto two decimal places)
Answer» A number of little droplets of water, each of radius 0.1 mm, coalesce to form a single drop of radius 1 mm. Assume the surface tension of water $T = 0.07 N / m$ and the mechanical equivalent of heat J $= 4.2 J / c a l$ . The change in temperature is (answer upto two decimal places)

Discussion

425.	Question 9Which of the following figures represents uniform motion of a moving object correctly?(a) (b)(c)(d)
Answer» Question 9 Which of the following figures represents uniform motion of a moving object correctly? (a) (b) (c) (d)

Discussion

426.	A compass has a small balanced pointer that always points in the North-South direction. This is because of the earth's___field.
Answer» A compass has a small balanced pointer that always points in the North-South direction. This is because of the earth's___field.

Discussion

427.	What are the pollutions caused by the objects given below?a. Loud Speaker b. Plastic
Answer» What are the pollutions caused by the objects given below? a. Loud Speaker b. Plastic

Discussion

428.	minimum number of 8μ f and 250v capacitors required to make a combination of 16μ f and 1000v are a)25 b)100 c)16 d)both a and b
Answer» minimum number of 8μ f and 250v capacitors required to make a combination of 16μ f and 1000v are a)25 b)100 c)16 d)both a and b

Discussion

429.	The end correctikn of resonance tube is 1cm .if lowest tesonant length is 15cm then next resonant length will be?
Answer» The end correctikn of resonance tube is 1cm .if lowest tesonant length is 15cm then next resonant length will be?

Discussion

430.	Explain why sportsmen use shoes with spikes.
Answer» Explain why sportsmen use shoes with spikes.

Discussion

431.	A force of 400 N is applied to the brake drum of 0.5 m diameter in a band brake system as shown in figure, where the wrapping angle is 180∘. If the coefficient of friction between the drum and the band is 0.25, the braking torque applied, in Nm is
Answer» A force of $400 N$ is applied to the brake drum of $0.5 m$ diameter in a band brake system as shown in figure, where the wrapping angle is $180^{\circ}$ . If the coefficient of friction between the drum and the band is $0.25$ , the braking torque applied, in $N m$ is

Discussion

432.	How is a cow magnet useful in preventing diseases in cattle?
Answer» How is a cow magnet useful in preventing diseases in cattle?

Discussion

433.	What in series LCR circuit is analogous to the driving force in mechanics?
Answer» What in series LCR circuit is analogous to the driving force in mechanics?

Discussion

434.	consider a pa\ln et moving around a star in an elliptical orbit with period T the area of the elliptical orbit is propoetional t
Answer» consider a pa\ln et moving around a star in an elliptical orbit with period T the area of the elliptical orbit is propoetional t

Discussion

435.	What is the full moon also known as
Answer» What is the full moon also known as

Discussion

436.	Discuss the effects of flood.
Answer» Discuss the effects of flood.

Discussion

437.	A satellite of time period 24h is orbitingthe earth at a height 6R above the surface of earth where R is radius of earth.what will be the time period of another satellite at a height 2.5R from the durface of earth?
Answer» A satellite of time period 24h is orbitingthe earth at a height 6R above the surface of earth where R is radius of earth.what will be the time period of another satellite at a height 2.5R from the durface of earth?

Discussion

438.	The length of a rectangle is 10 cm and width is 7 cm. What will be the area of a rectangle formed by joining 12 such rectangles?
Answer» The length of a rectangle is 10 cm and width is 7 cm. What will be the area of a rectangle formed by joining 12 such rectangles?

Discussion

439.	Which of the following shows the correct relation between speed, time and distance?
Answer» Which of the following shows the correct relation between speed, time and distance?

Discussion

440.	Which of the following is/are true about the frictional force? 1. It acts between all moving objects. 2. It always opposes relative motion between two objects. 3. It is a contact force. 4. It is a non- contact force.
Answer» Which of the following is/are true about the frictional force? 1. It acts between all moving objects. 2. It always opposes relative motion between two objects. 3. It is a contact force. 4. It is a non- contact force.

440.

Which of the following is/are true about the frictional force? 1. It acts between all moving objects. 2. It always opposes relative motion between two objects. 3. It is a contact force. 4. It is a non- contact force.

Answer»

Which of the following is/are true about the frictional force?

1. It acts between all moving objects.

2. It always opposes relative motion between two objects.

3. It is a contact force.

4. It is a non- contact force.

Discussion

441.	Electrostatic forces are:
Answer» Electrostatic forces are:

Discussion

442.	49. What is radial nodes and angular nodes?
Answer» 49. What is radial nodes and angular nodes?

Discussion

443.	How did we cone to know which pole is north and which pole is South?
Answer» How did we cone to know which pole is north and which pole is South?

Discussion

444.	___ force acts between charged particles that are at rest.
Answer» ___ force acts between charged particles that are at rest.

Discussion

445.	Explain what is ‘speed’ and give the formula for finding speed.
Answer» Explain what is ‘speed’ and give the formula for finding speed.

Discussion

446.	In the SI system, standard units for length, mass, time and temperature are fixed. What are these units?
Answer» In the SI system, standard units for length, mass, time and temperature are fixed. What are these units?

Discussion

447.	A nut cracker takes an effort of 4 kgf for a load of 6 kgf. What is its mechanical advantage?1.5
Answer» A nut cracker takes an effort of $4 kgf$ for a load of $6 kgf$ . What is its mechanical advantage? 1.5

Discussion

448.	A bus is moving with a speed of10ms110ms-1on a straight road. A scooterist wishes to overtake the bus in 100 s. If the bus is at a distance of 1 km from the scooterist, with what speed should the scooterist chase the bus?
Answer» A bus is moving with a speed of10ms110ms-1on a straight road. A scooterist wishes to overtake the bus in 100 s. If the bus is at a distance of 1 km from the scooterist, with what speed should the scooterist chase the bus?

Discussion

449.	Why it is advised to be careful with handling an electric appliances
Answer» Why it is advised to be careful with handling an electric appliances

Discussion

450.	Frequency of oscillation of a block with two springs separately are 3Hz and 4Hz. Frequency of oscillation of same block with both springs connected in parallel is
Answer» Frequency of oscillation of a block with two springs separately are 3Hz and 4Hz. Frequency of oscillation of same block with both springs connected in parallel is

Discussion

Explore topic-wise InterviewSolutions in .

When you rub your hands together, they become warm. What is this due to?

Differentiate between plane mirror and spherical mirror?

Can a completely transparent object cast a shadow?

Pick the image that will come next in the shrinking pattern.

What does the above symbol represent?

Question 3How has the traditional use of wind and water energy been modified for our convenience?

What is the difference between rest and motion?

Question 6 Filament of a torch bulb is (a) A metal case. (b) Metal tip at the centre of the base. (c) Two thick wires (d) A thin wire.

54. In a series LCR circuit which is connected to an AC voltage source choose the incorrect statement

Why do signs at petrol stations warn people not to use their cell phones while filling petrol in their cars?

Explain : Energy, work, potential energy, kinetic energy

Each of the two bulbs takes 2A current at 50V supply. They are joined in series .How much resistance should be added in series with the lamps so that on connecting then with 120V supply , a current of 2A flows through each of them ?

An ideal pulley system can lift a load of 1500 N by an effort of 300 N. The velocity ratio of the system is:

Why can we not measure the speed of a butterfly?

Earth has been assumed or imagined by the scientists as a huge magnetic dipole.Where is the north pole of the imaginary magnet inside the Earth is located ?

Which of the following are forms of mechanical energy?

Which of the following energy resources uses potential energy of water for generating electricity?

If Geeta is moving with respect to a building and Sangeeta is at rest with respect to the same building then,

Question 8 Which of the following figure shows the correct placement of a block along a scale for measuring its length? (a) (b) (c) (d)

Question 11Two boys are riding their bicycles on the same concrete road. One has new tyres on his bicycle while the other has tyres that are old and used. Which of them is more likely to skid while moving through a patch of the road which has lubricating oil spilled over it?

15. A set of 24 tuning fork are so arranged that each gives 44 beats per second with the previous one and the last sounds the octave of the first. then the frequency of the last fork is:

Here are the shadows of some 3-D objects, when seen under the lamp of the overhead projector. Identify the solid (s) that match each shadow. (There may be multiple answers for these!)

How much is the weight of an object on the moon as compared to its weight on the earth? Give a reason for your answer.

A number of little droplets of water, each of radius 0.1 mm, coalesce to form a single drop of radius 1 mm. Assume the surface tension of water T=0.07N/m and the mechanical equivalent of heat J=4.2 J/cal. The change in temperature is (answer upto two decimal places)

Question 9Which of the following figures represents uniform motion of a moving object correctly?(a) (b)(c)(d)

A compass has a small balanced pointer that always points in the North-South direction. This is because of the earth's___field.

What are the pollutions caused by the objects given below?a. Loud Speaker b. Plastic

minimum number of 8μ f and 250v capacitors required to make a combination of 16μ f and 1000v are a)25 b)100 c)16 d)both a and b

The end correctikn of resonance tube is 1cm .if lowest tesonant length is 15cm then next resonant length will be?

Explain why sportsmen use shoes with spikes.

A force of 400 N is applied to the brake drum of 0.5 m diameter in a band brake system as shown in figure, where the wrapping angle is 180∘. If the coefficient of friction between the drum and the band is 0.25, the braking torque applied, in Nm is

How is a cow magnet useful in preventing diseases in cattle?

What in series LCR circuit is analogous to the driving force in mechanics?

consider a pa\ln et moving around a star in an elliptical orbit with period T the area of the elliptical orbit is propoetional t

What is the full moon also known as

Discuss the effects of flood.

A satellite of time period 24h is orbitingthe earth at a height 6R above the surface of earth where R is radius of earth.what will be the time period of another satellite at a height 2.5R from the durface of earth?

The length of a rectangle is 10 cm and width is 7 cm. What will be the area of a rectangle formed by joining 12 such rectangles?

Which of the following shows the correct relation between speed, time and distance?

Which of the following is/are true about the frictional force? 1. It acts between all moving objects. 2. It always opposes relative motion between two objects. 3. It is a contact force. 4. It is a non- contact force.

Electrostatic forces are:

49. What is radial nodes and angular nodes?

How did we cone to know which pole is north and which pole is South?

___ force acts between charged particles that are at rest.

Explain what is ‘speed’ and give the formula for finding speed.

In the SI system, standard units for length, mass, time and temperature are fixed. What are these units?

A nut cracker takes an effort of 4 kgf for a load of 6 kgf. What is its mechanical advantage?1.5

A bus is moving with a speed of10ms110ms-1on a straight road. A scooterist wishes to overtake the bus in 100 s. If the bus is at a distance of 1 km from the scooterist, with what speed should the scooterist chase the bus?

Why it is advised to be careful with handling an electric appliances

Frequency of oscillation of a block with two springs separately are 3Hz and 4Hz. Frequency of oscillation of same block with both springs connected in parallel is