6277 + Interview Questions in Physics Page 105 InterviewSolution

5201.	Bridges are mounted on rollers. Why?
Answer» Bridges are mounted on rollers. Why?

Discussion

5202.	Why do I feel warm when I run my hands together?
Answer» Why do I feel warm when I run my hands together?

Discussion

5203.	1 hour is equal to how many seconds?
Answer» 1 hour is equal to how many seconds?

Discussion

5204.	___ unit is the system of units which has been accepted internationally and is common throughout the world.
Answer» ___ unit is the system of units which has been accepted internationally and is common throughout the world.

Discussion

5205.	Select the correct preposition for the blank. The soldiers were prepared to jump _____ the walls ____ barbed wires.
Answer» Select the correct preposition for the blank. The soldiers were prepared to jump _____ the walls ____ barbed wires.

5205.

Select the correct preposition for the blank. The soldiers were prepared to jump _ the walls barbed wires.

Answer»

Select the correct preposition for the blank.

The soldiers were prepared to jump _____ the walls ____ barbed wires.

Discussion

5206.	In the SI system of units, the unit of length is _______.
Answer» In the SI system of units, the unit of length is _______.

Discussion

5207.	(a) Why does electric current show heating effect? (b) Name two appliances that work because of the heating effect of electric current? [3 MARKS]
Answer» (a) Why does electric current show heating effect? (b) Name two appliances that work because of the heating effect of electric current? [3 MARKS]

Discussion

5208.	Bernoulli's principle holds good for:
Answer» Bernoulli's principle holds good for:

Discussion

5209.	Clinical thermometers cannot be used to measure:
Answer» Clinical thermometers cannot be used to measure:

Discussion

5210.	A diamond shines a lot more than a graphite. What can we infer from this information?
Answer» A diamond shines a lot more than a graphite. What can we infer from this information?

Discussion

5211.	A ___ is a material that allows electricity to pass through them.
Answer» A ___ is a material that allows electricity to pass through them.

Discussion

5212.	Which of the following describes the motion of a simple pendulum?
Answer» Which of the following describes the motion of a simple pendulum?

Discussion

5213.	Precautions during thunderstorms.
Answer» Precautions during thunderstorms.

Discussion

5214.	A heat engine undergoes a process in which its internal energy decreases by 400 J and it gives out 150 J of heat. During the process:
Answer» A heat engine undergoes a process in which its internal energy decreases by 400 J and it gives out 150 J of heat. During the process:

Discussion

5215.	If the speed of a car is 25 m/s. What is its speed in km/h?
Answer» If the speed of a car is 25 m/s. What is its speed in km/h?

Discussion

5216.	36 km/hr can be represented as:
Answer» 36 km/hr can be represented as:

Discussion

5217.	Displacement is a vector quantity because it has both magnitude and ___ .
Answer» Displacement is a vector quantity because it has both magnitude and ___ .

Discussion

5218.	The centre of gravity of an uniform circular ring lies ________.
Answer» The centre of gravity of an uniform circular ring lies ________.

Discussion

5219.	We should switch off bulbs and lights during day time. Give reasons.
Answer» We should switch off bulbs and lights during day time. Give reasons.

Discussion

5220.	Which of the following is true regarding radiation?
Answer» Which of the following is true regarding radiation?

Discussion

5221.	The south pole of earth's magnet is in
Answer» The south pole of earth's magnet is in

Discussion

5222.	The illuminance of a small area changes from 900 lumen m−1 to 400 lumen m−2 when it is shifted along its normal by 10 cm. Assuming that it is illuminated by a point source placed on the normal, find the distance between the source and the area in he original position .
Answer» The illuminance of a small area changes from 900 lumen $m^{-} 1$ to 400 lumen $m^{-} 2$ when it is shifted along its normal by 10 cm. Assuming that it is illuminated by a point source placed on the normal, find the distance between the source and the area in he original position .

Discussion

5223.	How the cyclone is form?
Answer» How the cyclone is form?

Discussion

5224.	Electric bell works on what principle?
Answer» Electric bell works on what principle?

Discussion

5225.	When the rays reflected from a surface are scattered in different directions, then the reflection is known as:
Answer» When the rays reflected from a surface are scattered in different directions, then the reflection is known as:

Discussion

5226.	What is room temperature? how to measure specific heat?
Answer» What is room temperature? how to measure specific heat?

Discussion

5227.	What will happen when a beam of light strikes a smooth marble floor?
Answer» What will happen when a beam of light strikes a smooth marble floor?

Discussion

5228.	Question 26 How is the power related to the speed at which a body can be lifted? How many kilograms will a man working at the power of 100 W, be able to lift at constant speed of 1 ms−1 vertically? (g=10 ms−2)
Answer» Question 26 How is the power related to the speed at which a body can be lifted? How many kilograms will a man working at the power of 100 W, be able to lift at constant speed of $1 m s^{- 1}$ vertically? $(g = 10 m s^{- 2})$

Discussion

5229.	Two bodies are said to be in thermal ___when there is no transfer of heat taking place.
Answer» Two bodies are said to be in thermal ___when there is no transfer of heat taking place.

Discussion

5230.	Question 2 (e) Mark T if the statement is true and F if it is false: A concave mirror always forms a real image.
Answer» Question 2 (e) Mark T if the statement is true and F if it is false: A concave mirror always forms a real image.

Discussion

5231.	Why water is liquid at room temperature
Answer» Why water is liquid at room temperature

Discussion

5232.	Question 12 Zubeda made an electric circuit using a cell holder shown in Fig, a switch and a bulb. When she put the switch in the ‘ON’ position, the bulb did not glow. Help Zubeda in identifying the possible defects in the circuit.
Answer» Question 12 Zubeda made an electric circuit using a cell holder shown in Fig, a switch and a bulb. When she put the switch in the ‘ON’ position, the bulb did not glow. Help Zubeda in identifying the possible defects in the circuit.

Discussion

5233.	What is the advantage of replacing a fuse with a circuit breaker
Answer» What is the advantage of replacing a fuse with a circuit breaker

Discussion

5234.	When we pass electricity through the coil, it produces magnetic field around the soft iron piece and this soft iron piece becomes electromagnet and its magnetic strength can be changed by changing the amount of current flowing the coil. Electromagnets have various uses in the industry. It can be used to separate magnetic material from non-magnetic material as it will attract all the magnetic material, thus leaving behind all the non- magnetic material. When we press the button for electric bell outside anyone's house, what happens? You hear a sound but that sound remains only till you press the button as soon as you remove your finger, the sound stops. The mechanism which explains the bell out of the following is?
Answer» When we pass electricity through the coil, it produces magnetic field around the soft iron piece and this soft iron piece becomes electromagnet and its magnetic strength can be changed by changing the amount of current flowing the coil. Electromagnets have various uses in the industry. It can be used to separate magnetic material from non-magnetic material as it will attract all the magnetic material, thus leaving behind all the non- magnetic material. When we press the button for electric bell outside anyone's house, what happens? You hear a sound but that sound remains only till you press the button as soon as you remove your finger, the sound stops. The mechanism which explains the bell out of the following is?

5234.

When we pass electricity through the coil, it produces magnetic field around the soft iron piece and this soft iron piece becomes electromagnet and its magnetic strength can be changed by changing the amount of current flowing the coil. Electromagnets have various uses in the industry. It can be used to separate magnetic material from non-magnetic material as it will attract all the magnetic material, thus leaving behind all the non- magnetic material. When we press the button for electric bell outside anyone's house, what happens? You hear a sound but that sound remains only till you press the button as soon as you remove your finger, the sound stops. The mechanism which explains the bell out of the following is?

Answer»

When we pass electricity through the coil, it produces magnetic field around the soft iron piece and this soft iron piece becomes electromagnet and its magnetic strength can be changed by changing the amount of current flowing the coil.
Electromagnets have various uses in the industry. It can be used to separate magnetic material from non-magnetic material as it will attract all the magnetic material, thus leaving behind all the non- magnetic material.
When we press the button for electric bell outside anyone's house, what happens? You hear a sound but that sound remains only till you press the button as soon as you remove your finger, the sound stops.

The mechanism which explains the bell out of the following is?

Discussion

5235.	A body which emits light by itself is called___object.
Answer» A body which emits light by itself is called___object.

Discussion

5236.	On which of the following factor, the direction of deflection of a magnetic needle of a compass depends when the compass is kept near a current carrying wire?
Answer» On which of the following factor, the direction of deflection of a magnetic needle of a compass depends when the compass is kept near a current carrying wire?

Discussion

5237.	Question 3 In the given figure, PQ is a mirror, AB is the incident ray and BC is the reflected ray. If ∠ABC=46∘, then ∠ABP is equal to (a) 44∘ (b) 67∘ (c) 13∘ (d) 62∘
Answer» Question 3 In the given figure, PQ is a mirror, AB is the incident ray and BC is the reflected ray. If $∠ A B C = 46^{\circ},$ then $∠ A B P$ is equal to (a) $44^{\circ}$ (b) $67^{\circ}$ (c) $13^{\circ}$ (d) $62^{\circ}$

Discussion

5238.	Which of the following can be used to measure the temperature of boiling water?
Answer» Which of the following can be used to measure the temperature of boiling water?

Discussion

5239.	Which of the following is not a valid displacement-time graph of an object in motion?
Answer» Which of the following is not a valid displacement-time graph of an object in motion?

Discussion

5240.	Question 10 Slope of a velocity-time graph gives (a) the distance (b) the displacement (c) the acceleration (d) the speed
Answer» Question 10 Slope of a velocity-time graph gives (a) the distance (b) the displacement (c) the acceleration (d) the speed

Discussion

5241.	Draw sketches to show the relative position of prominent stars in (a) Ursa Major and (b) Orion. [5 MARKS]
Answer» Draw sketches to show the relative position of prominent stars in (a) Ursa Major and (b) Orion. [5 MARKS]

Discussion

5242.	The dimensions of (change in velocity / time) is
Answer» The dimensions of (change in velocity / time) is

Discussion

5243.	A solid consists of a circular cylinder with an exact fitting right circular cone placed on the top. The height of the cone is h. If the total volume of the solid is three times the volume of the cone, then the height of the cylinder is
Answer» A solid consists of a circular cylinder with an exact fitting right circular cone placed on the top. The height of the cone is h. If the total volume of the solid is three times the volume of the cone, then the height of the cylinder is

Discussion

5244.	If the time taken by a train moving at 100 km h−1 to cover a certain distance is 0.5 hours, what should be the speed of the train in order to cover the same distance in 0.2 hours?
Answer» If the time taken by a train moving at $100 k m h^{- 1}$ to cover a certain distance is $0.5$ hours, what should be the speed of the train in order to cover the same distance in $0.2$ hours?

Discussion

5245.	What is the difference between periodic and non periodic motion give example of each ?
Answer» What is the difference between periodic and non periodic motion give example of each ?

Discussion

5246.	The device used to measure the relative density of a liquid is known as:
Answer» The device used to measure the relative density of a liquid is known as:

Discussion

5247.	To expel half the mass of air from a large flask at 27∘C, it must be heated to
Answer» To expel half the mass of air from a large flask at $27^{\circ}$ C, it must be heated to

Discussion

5248.	Consider the following statements about ideal conditions for temperature inversion. 1. Cloudless and clear sky 2. Calm and moist air 3. Long winter nights 4. There is no wind Which of the above statements are correct?
Answer» Consider the following statements about ideal conditions for temperature inversion. 1. Cloudless and clear sky 2. Calm and moist air 3. Long winter nights 4. There is no wind Which of the above statements are correct?

5248.

Consider the following statements about ideal conditions for temperature inversion. 1. Cloudless and clear sky 2. Calm and moist air 3. Long winter nights 4. There is no wind Which of the above statements are correct?

Answer»

Consider the following statements about ideal conditions for temperature inversion.

1. Cloudless and clear sky

2. Calm and moist air

3. Long winter nights

4. There is no wind

Which of the above statements are correct?

Discussion

5249.	Question 1 (b) Fill the missing word in the blank spaces in the following statements: (b) Winds are generated due to ––––– heating on the earth.
Answer» Question 1 (b) Fill the missing word in the blank spaces in the following statements: (b) Winds are generated due to $- --- -$ heating on the earth.

Discussion

5250.	Why do some cars have a blind spot mirror (small mirror) placed in the rear view mirrors of their cars? Is it a concave or convex mirror or plane mirror?
Answer» Why do some cars have a blind spot mirror (small mirror) placed in the rear view mirrors of their cars? Is it a concave or convex mirror or plane mirror?

Discussion

Explore topic-wise InterviewSolutions in .

Bridges are mounted on rollers. Why?

Why do I feel warm when I run my hands together?

1 hour is equal to how many seconds?

___ unit is the system of units which has been accepted internationally and is common throughout the world.

Select the correct preposition for the blank. The soldiers were prepared to jump _____ the walls ____ barbed wires.

In the SI system of units, the unit of length is _______.

(a) Why does electric current show heating effect? (b) Name two appliances that work because of the heating effect of electric current? [3 MARKS]

Bernoulli's principle holds good for:

Clinical thermometers cannot be used to measure:

A diamond shines a lot more than a graphite. What can we infer from this information?

A ___ is a material that allows electricity to pass through them.

Which of the following describes the motion of a simple pendulum?

Precautions during thunderstorms.

A heat engine undergoes a process in which its internal energy decreases by 400 J and it gives out 150 J of heat. During the process:

If the speed of a car is 25 m/s. What is its speed in km/h?

36 km/hr can be represented as:

Displacement is a vector quantity because it has both magnitude and ___ .

The centre of gravity of an uniform circular ring lies ________.

We should switch off bulbs and lights during day time. Give reasons.

Which of the following is true regarding radiation?

The south pole of earth's magnet is in

The illuminance of a small area changes from 900 lumen m−1 to 400 lumen m−2 when it is shifted along its normal by 10 cm. Assuming that it is illuminated by a point source placed on the normal, find the distance between the source and the area in he original position .

How the cyclone is form?

Electric bell works on what principle?

When the rays reflected from a surface are scattered in different directions, then the reflection is known as:

What is room temperature? how to measure specific heat?

What will happen when a beam of light strikes a smooth marble floor?

Question 26 How is the power related to the speed at which a body can be lifted? How many kilograms will a man working at the power of 100 W, be able to lift at constant speed of 1 ms−1 vertically? (g=10 ms−2)

Two bodies are said to be in thermal ___when there is no transfer of heat taking place.

Question 2 (e) Mark T if the statement is true and F if it is false: A concave mirror always forms a real image.

Why water is liquid at room temperature

Question 12 Zubeda made an electric circuit using a cell holder shown in Fig, a switch and a bulb. When she put the switch in the ‘ON’ position, the bulb did not glow. Help Zubeda in identifying the possible defects in the circuit.

What is the advantage of replacing a fuse with a circuit breaker

A body which emits light by itself is called___object.

On which of the following factor, the direction of deflection of a magnetic needle of a compass depends when the compass is kept near a current carrying wire?

Question 3 In the given figure, PQ is a mirror, AB is the incident ray and BC is the reflected ray. If ∠ABC=46∘, then ∠ABP is equal to (a) 44∘ (b) 67∘ (c) 13∘ (d) 62∘

Which of the following can be used to measure the temperature of boiling water?

Which of the following is not a valid displacement-time graph of an object in motion?

Question 10 Slope of a velocity-time graph gives (a) the distance (b) the displacement (c) the acceleration (d) the speed

Draw sketches to show the relative position of prominent stars in (a) Ursa Major and (b) Orion. [5 MARKS]

The dimensions of (change in velocity / time) is

A solid consists of a circular cylinder with an exact fitting right circular cone placed on the top. The height of the cone is h. If the total volume of the solid is three times the volume of the cone, then the height of the cylinder is

If the time taken by a train moving at 100 km h−1 to cover a certain distance is 0.5 hours, what should be the speed of the train in order to cover the same distance in 0.2 hours?

What is the difference between periodic and non periodic motion give example of each ?

The device used to measure the relative density of a liquid is known as:

To expel half the mass of air from a large flask at 27∘C, it must be heated to

Consider the following statements about ideal conditions for temperature inversion. 1. Cloudless and clear sky 2. Calm and moist air 3. Long winter nights 4. There is no wind Which of the above statements are correct?

Question 1 (b) Fill the missing word in the blank spaces in the following statements: (b) Winds are generated due to ––––– heating on the earth.

Why do some cars have a blind spot mirror (small mirror) placed in the rear view mirrors of their cars? Is it a concave or convex mirror or plane mirror?

Select the correct preposition for the blank. The soldiers were prepared to jump _ the walls barbed wires.