6277 + Interview Questions in Physics Page 86 InterviewSolution

4251.	Mention the uses of concave and convex lens
Answer» Mention the uses of concave and convex lens

Discussion

4252.	Compare sound of a baby with sound of a man. Even if both have same loudness, how they differ. Explain the factor which cause difference. [3 MARKS]
Answer» Compare sound of a baby with sound of a man. Even if both have same loudness, how they differ. Explain the factor which cause difference. [3 MARKS]

Discussion

4253.	Which kind of energy is associated with this image?
Answer» Which kind of energy is associated with this image?

Discussion

4254.	A body is said to be in uniform motion when it travels_________.
Answer» A body is said to be in uniform motion when it travels_________.

Discussion

4255.	Magnetic lines of force
Answer» Magnetic lines of force

Discussion

4256.	During winters we feel cold because:
Answer» During winters we feel cold because:

Discussion

4257.	In which of the following case, the flow of electric current will be maximum?
Answer» In which of the following case, the flow of electric current will be maximum?

Discussion

4258.	Question 12 A circular metal loop is heated at point O as shown in Figure. (i) In which direction would heat flow in the loop? (ii) In which order the pins at points P,Q and R fixed with the help of wax fall if points O, P, Q and R are equidistant from each other?
Answer» Question 12 A circular metal loop is heated at point O as shown in Figure. (i) In which direction would heat flow in the loop? (ii) In which order the pins at points P,Q and R fixed with the help of wax fall if points O, P, Q and R are equidistant from each other?

4258.

Question 12 A circular metal loop is heated at point O as shown in Figure. (i) In which direction would heat flow in the loop? (ii) In which order the pins at points P,Q and R fixed with the help of wax fall if points O, P, Q and R are equidistant from each other?

Answer»

Question 12

A circular metal loop is heated at point O as shown in Figure.

(i) In which direction would heat flow in the loop?
(ii) In which order the pins at points P,Q and R fixed with the help of wax fall if points O, P, Q and R are equidistant from each other?

Discussion

4259.	Identify the verb which gives the simple future tense to the sentence. They will ring the bell when the bridegroom arrives.
Answer» Identify the verb which gives the simple future tense to the sentence. They will ring the bell when the bridegroom arrives.

4259.

Identify the verb which gives the simple future tense to the sentence. They will ring the bell when the bridegroom arrives.

Answer»

Identify the verb which gives the simple future tense to the sentence.

They will ring the bell when the bridegroom arrives.

Discussion

4260.	What made the kulhs water irrigation system used in Himachal Pradesh better than the trivial irrigation system.
Answer» What made the kulhs water irrigation system used in Himachal Pradesh better than the trivial irrigation system.

Discussion

4261.	What happens to the shape of a hot tin can when cold water is poured in it?
Answer» What happens to the shape of a hot tin can when cold water is poured in it?

Discussion

4262.	What is the focal length of a plane mirror? [1 MARK]
Answer» What is the focal length of a plane mirror? [1 MARK]

Discussion

4263.	Two rods A and B of the same material and length have their radii r1 and r2 respectively. When they are rigidly fixed at one end and twisted by the same couple applied at the other end, the ratio of the angle of twist at the end of A and the angle of twist at the end of B is
Answer» Two rods A and B of the same material and length have their radii $r_{1}$ and $r_{2}$ respectively. When they are rigidly fixed at one end and twisted by the same couple applied at the other end, the ratio of the angle of twist at the end of A and the angle of twist at the end of B is

Discussion

4264.	If a completely inflated balloon is kept in the hot son in summer , do you expect anything to happen ? (2m)
Answer» If a completely inflated balloon is kept in the hot son in summer , do you expect anything to happen ? (2m)

Discussion

4265.	If a train covers 50 km in 2 hours, how much time would it take to cover 100 km?
Answer» If a train covers 50 km in 2 hours, how much time would it take to cover 100 km?

Discussion

4266.	From the given options, identify the poisonous gas which is formed upon incomplete combustion of fuels.
Answer» From the given options, identify the poisonous gas which is formed upon incomplete combustion of fuels.

Discussion

4267.	A person is standing in front of a plane mirror at 60 cm from it. Suddenly the mirror moves by some distance towards him. It was found that the final image also moves by 40 cm from the initial position towards the mirror. Find the distance moved by a mirror?
Answer» A person is standing in front of a plane mirror at $60 c m$ from it. Suddenly the mirror moves by some distance towards him. It was found that the final image also moves by $40 c m$ from the initial position towards the mirror. Find the distance moved by a mirror?

Discussion

4268.	The volume of the air _______ when we heat the air.
Answer» The volume of the air _______ when we heat the air.

Discussion

4269.	When the south pole of a magnet is brought near the north pole of a freely suspended magnetic needle, they ___ each other.
Answer» When the south pole of a magnet is brought near the north pole of a freely suspended magnetic needle, they ___ each other.

Discussion

4270.	Question 1 An athlete completes one round of a circular track of diameter 200 m in 40 seconds. What will be the distance covered and the displacement at the end of 2 minutes 20 seconds ?
Answer» Question 1 An athlete completes one round of a circular track of diameter 200 m in 40 seconds. What will be the distance covered and the displacement at the end of 2 minutes 20 seconds ?

Discussion

4271.	What are the number of terminals in an electric bulb?
Answer» What are the number of terminals in an electric bulb?

Discussion

4272.	We can see non-luminous objects because
Answer» We can see non-luminous objects because

Discussion

4273.	If light is part of a spectrum why can we only see light and not the other parts of the spectrum? If we can only see light why can we infrared filters in a camera? And will we we ever evolve into creatures that can see other forms of energy too?
Answer» If light is part of a spectrum why can we only see light and not the other parts of the spectrum? If we can only see light why can we infrared filters in a camera? And will we we ever evolve into creatures that can see other forms of energy too?

Discussion

4274.	Suppose you have a clinical thermometer in which bigger marks read one degree and there are 10 divisions between them. What is the minimum reading that you can take using this thermometer?
Answer» Suppose you have a clinical thermometer in which bigger marks read one degree and there are 10 divisions between them. What is the minimum reading that you can take using this thermometer?

Discussion

4275.	A ________ object is one that does not produce its own light, although it can still reflect light from other sources.
Answer» A ________ object is one that does not produce its own light, although it can still reflect light from other sources.

Discussion

4276.	Define kinetic energy. Write the equation for kinetic energy. Two bodies of equal masses move with uniform velocities v and 3v respectively. Find the ratio of their kinetic energies. [5 MARKS]
Answer» Define kinetic energy. Write the equation for kinetic energy. Two bodies of equal masses move with uniform velocities v and 3v respectively. Find the ratio of their kinetic energies. [5 MARKS]

Discussion

4277.	Each of the three blocks P, Q and R shown in figure have a mass of 3 kg. Each of the wires A and B has cross-sectional area 0.005 cm2 and Young modulus 2 x 1011 N m-2. Neglect friction. Find the longitudinal strain developed in each of the wires. Take g = 10 m s-2.
Answer» Each of the three blocks P, Q and R shown in figure have a mass of 3 kg. Each of the wires A and B has cross-sectional area 0.005 cm² and Young modulus 2 x 10¹¹ N m^-2. Neglect friction. Find the longitudinal strain developed in each of the wires. Take g = 10 m s^-².

4277.

Each of the three blocks P, Q and R shown in figure have a mass of 3 kg. Each of the wires A and B has cross-sectional area 0.005 cm2 and Young modulus 2 x 1011 N m-2. Neglect friction. Find the longitudinal strain developed in each of the wires. Take g = 10 m s-2.

Answer»

Each of the three blocks P, Q and R shown in figure have a mass of 3 kg. Each of the wires A and B has cross-sectional area 0.005 cm² and Young modulus 2 x 10¹¹ N m^-2. Neglect friction. Find the longitudinal strain developed in each of the wires. Take g = 10 m s^-².

Discussion

4278.	Please explain in detail the motion in Roller Coaster Ride.
Answer» Please explain in detail the motion in Roller Coaster Ride.

Discussion

4279.	Question 9 (d) Mark ‘T’ if the statement is true and ‘F’ if it is false: An electric bell has an electromagnet.
Answer» Question 9 (d) Mark ‘T’ if the statement is true and ‘F’ if it is false: An electric bell has an electromagnet.

Discussion

4280.	When nuclei split, it releases ___ energy.
Answer» When nuclei split, it releases ___ energy.

Discussion

4281.	what are some ancient time measuring devices.
Answer» what are some ancient time measuring devices.

Discussion

4282.	A boy weighs 600 N on the Earth. What would be his weight on the Moon? (acceleration due to gravity of earth g=10m/s2)
Answer» A boy weighs $600 N$ on the Earth. What would be his weight on the Moon? (acceleration due to gravity of earth $g = 10 m / s^{2}$ )

Discussion

4283.	What is the nature of image formed in a concave lens? [3 MARKS]
Answer» What is the nature of image formed in a concave lens? [3 MARKS]

Discussion

4284.	Given a piece of metal, ___ is necessary to test whether it is a magnet or not.
Answer» Given a piece of metal, ___ is necessary to test whether it is a magnet or not.

Discussion

4285.	Solar cells convert incident solar energy into ___ energy.
Answer» Solar cells convert incident solar energy into ___ energy.

Discussion

4286.	36 Km 1/1h = ? m 1/1s
Answer» 36 Km 1/1h = ? m 1/1s

Discussion

4287.	How many images of a candle will be formed if it is placed between two parallel plane mirrors separated by 50 cm?
Answer» How many images of a candle will be formed if it is placed between two parallel plane mirrors separated by 50 cm?

Discussion

4288.	What do we see when we see beam of light
Answer» What do we see when we see beam of light

Discussion

4289.	Rakesh started his journey of 42 km from x to y with a speed of 60 km/hr. But after every 10 minute he increases his speed by 6 km/hr. How much time did he take to reach y?
Answer» Rakesh started his journey of 42 km from x to y with a speed of 60 km/hr. But after every 10 minute he increases his speed by 6 km/hr. How much time did he take to reach y?

Discussion

4290.	Why does the moon appear to be yellow and blue at times?
Answer» Why does the moon appear to be yellow and blue at times?

Discussion

4291.	Question 9 Boojho dipped a bar magnet in a heap of iron filings and pulled it out. He found that iron filings got stuck to the magnet as shown. (i) Which regions of the magnet have more iron filings sticking to it? (ii) What are these regions called?
Answer» Question 9 Boojho dipped a bar magnet in a heap of iron filings and pulled it out. He found that iron filings got stuck to the magnet as shown. (i) Which regions of the magnet have more iron filings sticking to it? (ii) What are these regions called?

4291.

Question 9 Boojho dipped a bar magnet in a heap of iron filings and pulled it out. He found that iron filings got stuck to the magnet as shown. (i) Which regions of the magnet have more iron filings sticking to it? (ii) What are these regions called?

Answer»

Question 9

Boojho dipped a bar magnet in a heap of iron filings and pulled it out. He found that iron filings got stuck to the magnet as shown.

(i) Which regions of the magnet have more iron filings sticking to it?
(ii) What are these regions called?

Discussion

4292.	How is a clinical thermometer different from a laboratory thermometer in the way it's made. [3 MARKS]
Answer» How is a clinical thermometer different from a laboratory thermometer in the way it's made. [3 MARKS]

Discussion

4293.	Why do black colour absorbs heat?
Answer» Why do black colour absorbs heat?

Discussion

4294.	Question 10A car moves with a speed of 40 km/h for 15 minutes and then with a speed of 60 km/h for the next 15 minutes. The total distance covered by the car is:(i) 100 km(ii) 25 km(iii) 15 km(iv) 10 km
Answer» Question 10 A car moves with a speed of 40 km/h for 15 minutes and then with a speed of 60 km/h for the next 15 minutes. The total distance covered by the car is: (i) 100 km (ii) 25 km (iii) 15 km (iv) 10 km

Discussion

4295.	During rainy season, Shivam noted that the thundering sound of clouds was heard 6 seconds after the lightning was seen by him. If speed of sound in air is 340 m/s, find the distance of point where the thundering sound was produced.
Answer» During rainy season, Shivam noted that the thundering sound of clouds was heard 6 seconds after the lightning was seen by him. If speed of sound in air is 340 m/s, find the distance of point where the thundering sound was produced.

Discussion

4296.	Why can't you use laboratory thermometer to measure the temperature of your body ? How does a clinical thermometer solve this problem?
Answer» Why can't you use laboratory thermometer to measure the temperature of your body ? How does a clinical thermometer solve this problem?

Discussion

4297.	An electric kettle rated at 2.2 kW works for 4 hours in a day. Calculate the number of units consumed by it in 20 days.
Answer» An electric kettle rated at 2.2 kW works for 4 hours in a day. Calculate the number of units consumed by it in 20 days.

Discussion

4298.	Blood is flowing at the rate of 200 cm3/s in a capillary of cross-section area 0.5 m2 . The velocity of flow is mm/s is
Answer» Blood is flowing at the rate of 200 cm³/s in a capillary of cross-section area 0.5 m². The velocity of flow is mm/s is

Discussion

4299.	23:25:00 in 12-hour format will be written as:
Answer» 23:25:00 in 12-hour format will be written as:

Discussion

4300.	An astronaut weighs 840 N on Earth, what would his weight be on the Moon?
Answer» An astronaut weighs 840 N on Earth, what would his weight be on the Moon?

Discussion

Explore topic-wise InterviewSolutions in .

Mention the uses of concave and convex lens

Compare sound of a baby with sound of a man. Even if both have same loudness, how they differ. Explain the factor which cause difference. [3 MARKS]

Which kind of energy is associated with this image?

A body is said to be in uniform motion when it travels_________.

Magnetic lines of force

During winters we feel cold because:

In which of the following case, the flow of electric current will be maximum?

Question 12 A circular metal loop is heated at point O as shown in Figure. (i) In which direction would heat flow in the loop? (ii) In which order the pins at points P,Q and R fixed with the help of wax fall if points O, P, Q and R are equidistant from each other?

Identify the verb which gives the simple future tense to the sentence. They will ring the bell when the bridegroom arrives.

What made the kulhs water irrigation system used in Himachal Pradesh better than the trivial irrigation system.

What happens to the shape of a hot tin can when cold water is poured in it?

What is the focal length of a plane mirror? [1 MARK]

Two rods A and B of the same material and length have their radii r1 and r2 respectively. When they are rigidly fixed at one end and twisted by the same couple applied at the other end, the ratio of the angle of twist at the end of A and the angle of twist at the end of B is

If a completely inflated balloon is kept in the hot son in summer , do you expect anything to happen ? (2m)

If a train covers 50 km in 2 hours, how much time would it take to cover 100 km?

From the given options, identify the poisonous gas which is formed upon incomplete combustion of fuels.

A person is standing in front of a plane mirror at 60 cm from it. Suddenly the mirror moves by some distance towards him. It was found that the final image also moves by 40 cm from the initial position towards the mirror. Find the distance moved by a mirror?

The volume of the air _______ when we heat the air.

When the south pole of a magnet is brought near the north pole of a freely suspended magnetic needle, they ___ each other.

Question 1 An athlete completes one round of a circular track of diameter 200 m in 40 seconds. What will be the distance covered and the displacement at the end of 2 minutes 20 seconds ?

What are the number of terminals in an electric bulb?

We can see non-luminous objects because

If light is part of a spectrum why can we only see light and not the other parts of the spectrum? If we can only see light why can we infrared filters in a camera? And will we we ever evolve into creatures that can see other forms of energy too?

Suppose you have a clinical thermometer in which bigger marks read one degree and there are 10 divisions between them. What is the minimum reading that you can take using this thermometer?

A ________ object is one that does not produce its own light, although it can still reflect light from other sources.

Define kinetic energy. Write the equation for kinetic energy. Two bodies of equal masses move with uniform velocities v and 3v respectively. Find the ratio of their kinetic energies. [5 MARKS]

Each of the three blocks P, Q and R shown in figure have a mass of 3 kg. Each of the wires A and B has cross-sectional area 0.005 cm2 and Young modulus 2 x 1011 N m-2. Neglect friction. Find the longitudinal strain developed in each of the wires. Take g = 10 m s-2.

Please explain in detail the motion in Roller Coaster Ride.

Question 9 (d) Mark ‘T’ if the statement is true and ‘F’ if it is false: An electric bell has an electromagnet.

When nuclei split, it releases ___ energy.

what are some ancient time measuring devices.

A boy weighs 600 N on the Earth. What would be his weight on the Moon? (acceleration due to gravity of earth g=10m/s2)

What is the nature of image formed in a concave lens? [3 MARKS]

Given a piece of metal, ___ is necessary to test whether it is a magnet or not.

Solar cells convert incident solar energy into ___ energy.

36 Km 1/1h = ? m 1/1s

How many images of a candle will be formed if it is placed between two parallel plane mirrors separated by 50 cm?

What do we see when we see beam of light

Rakesh started his journey of 42 km from x to y with a speed of 60 km/hr. But after every 10 minute he increases his speed by 6 km/hr. How much time did he take to reach y?

Why does the moon appear to be yellow and blue at times?

Question 9 Boojho dipped a bar magnet in a heap of iron filings and pulled it out. He found that iron filings got stuck to the magnet as shown. (i) Which regions of the magnet have more iron filings sticking to it? (ii) What are these regions called?

How is a clinical thermometer different from a laboratory thermometer in the way it's made. [3 MARKS]

Why do black colour absorbs heat?

Question 10A car moves with a speed of 40 km/h for 15 minutes and then with a speed of 60 km/h for the next 15 minutes. The total distance covered by the car is:(i) 100 km(ii) 25 km(iii) 15 km(iv) 10 km

During rainy season, Shivam noted that the thundering sound of clouds was heard 6 seconds after the lightning was seen by him. If speed of sound in air is 340 m/s, find the distance of point where the thundering sound was produced.

Why can't you use laboratory thermometer to measure the temperature of your body ? How does a clinical thermometer solve this problem?

An electric kettle rated at 2.2 kW works for 4 hours in a day. Calculate the number of units consumed by it in 20 days.

Blood is flowing at the rate of 200 cm3/s in a capillary of cross-section area 0.5 m2 . The velocity of flow is mm/s is

23:25:00 in 12-hour format will be written as:

An astronaut weighs 840 N on Earth, what would his weight be on the Moon?