9478 + Interview Questions in Physics Page 134 InterviewSolution

6651.	On a glass plate a light wave is incident at an angle of 60∘. If the reflected and the refracted waves are mutually perpendicular, the refractive index of material is
Answer» On a glass plate a light wave is incident at an angle of $60^{\circ}$ . If the reflected and the refracted waves are mutually perpendicular, the refractive index of material is

Discussion

6652.	What is meant by inter-molecular forces of attraction? How do they carry in solids, liquids and gases?
Answer» What is meant by inter-molecular forces of attraction? How do they carry in solids, liquids and gases?

Discussion

6653.	For same loudness and pitch ____.
Answer» For same loudness and pitch ____.

Discussion

6654.	The normal atmospheric pressure is : (a) 76 m of Hg (b) 76 cm of Hg (c) 76 Pa (d) 76 N m−2
Answer» The normal atmospheric pressure is : (a) 76 m of Hg (b) 76 cm of Hg (c) 76 Pa (d) 76 N $m^{- 2}$

Discussion

6655.	If a monochromatic white light is passed through the prism, which of the following phenomenon could be observed?
Answer» If a monochromatic white light is passed through the prism, which of the following phenomenon could be observed?

Discussion

6656.	A driver uses a convex mirror as a rear view mirror. Explain the reason with the help of a ray diagram.
Answer» A driver uses a convex mirror as a rear view mirror. Explain the reason with the help of a ray diagram.

Discussion

6657.	Question 23 In Fig 4.1 you find that the bulb glows when an iron nail is placed between two ends of the wire. Complete the following sentences on the bases of this fact. (a) __________ is a metal. (b) Metals are good __________ of electricity.
Answer» Question 23 In Fig 4.1 you find that the bulb glows when an iron nail is placed between two ends of the wire. Complete the following sentences on the bases of this fact. (a) __________ is a metal. (b) Metals are good __________ of electricity.

Discussion

6658.	why is venus so bright why is it so
Answer» why is venus so bright why is it so

Discussion

6659.	Why is the Earth called 'the ocean of charges'?
Answer» Why is the Earth called 'the ocean of charges'?

Discussion

6660.	Why venus and uranus rotate from east to west?
Answer» Why venus and uranus rotate from east to west?

Discussion

6661.	Which of the following is a suitable method to decrease friction?
Answer» Which of the following is a suitable method to decrease friction?

Discussion

6662.	The portion of the human eye on which image is formed is called ___ .
Answer» The portion of the human eye on which image is formed is called ___ .

Discussion

6663.	S.I. unit of moment of force is:
Answer» S.I. unit of moment of force is:

Discussion

6664.	When an ebonite rod is rubbed with silk, the charge acquired by the rod is
Answer» When an ebonite rod is rubbed with silk, the charge acquired by the rod is

Discussion

6665.	A body when immersed in kerosene, it sinks. What relation could be established between the densities of the body and kerosene?
Answer» A body when immersed in kerosene, it sinks. What relation could be established between the densities of the body and kerosene?

Discussion

6666.	Which of the following invention belongs to Galileo?
Answer» Which of the following invention belongs to Galileo?

Discussion

6667.	Why a sheet of paper falls slower than when it is crumbled into a ball
Answer» Why a sheet of paper falls slower than when it is crumbled into a ball

Discussion

6668.	What is larynx? What are its functions?
Answer» What is larynx? What are its functions?

Discussion

6669.	(a) What is the noise? Give two examples of sounds which are considered noise. (b) What is a musical sound? Give two examples of musical sounds.
Answer» (a) What is the noise? Give two examples of sounds which are considered noise. (b) What is a musical sound? Give two examples of musical sounds.

6669.

(a) What is the noise? Give two examples of sounds which are considered noise. (b) What is a musical sound? Give two examples of musical sounds.

Answer»

(a) What is the noise? Give two examples of sounds which are considered noise.

(b) What is a musical sound? Give two examples of musical sounds.

Discussion

6670.	The following figure shows the elliptical path of a planet about the sun. The two shaded parts have equal areas. If t1, t2 be the time taken by the planet to go from A to B and from C to D respectively.
Answer» The following figure shows the elliptical path of a planet about the sun. The two shaded parts have equal areas. If $t_{1}$ , $t_{2}$ be the time taken by the planet to go from A to B and from C to D respectively.

6670.

The following figure shows the elliptical path of a planet about the sun. The two shaded parts have equal areas. If t1, t2 be the time taken by the planet to go from A to B and from C to D respectively.

Answer»

The following figure shows the elliptical path of a planet about the sun. The two shaded parts have equal areas. If $t_{1}$ , $t_{2}$ be the time taken by the planet to go from A to B and from C to D respectively.

Discussion

6671.	A positively charged rod is brought close to one end of a neutral metallic plate. What type of charge is induced on the closest side of the plate?
Answer» A positively charged rod is brought close to one end of a neutral metallic plate. What type of charge is induced on the closest side of the plate?

Discussion

6672.	Question 21 Two thermocol balls held close to each other move away from each other. When they are released, name the force which might be responsible for this phenomenon. Explain.
Answer» Question 21 Two thermocol balls held close to each other move away from each other. When they are released, name the force which might be responsible for this phenomenon. Explain.

Discussion

6673.	(a) Name the material of which a lightning conductor is made. (b) What is the shape of the top end of a lightning conductor ? (c) Where is the upper end of the lightning conductor fixed in a building ? (d) Where is the lower end of the lightning conductor fixed and how ?
Answer» (a) Name the material of which a lightning conductor is made. (b) What is the shape of the top end of a lightning conductor ? (c) Where is the upper end of the lightning conductor fixed in a building ? (d) Where is the lower end of the lightning conductor fixed and how ?

6673.

(a) Name the material of which a lightning conductor is made. (b) What is the shape of the top end of a lightning conductor ? (c) Where is the upper end of the lightning conductor fixed in a building ? (d) Where is the lower end of the lightning conductor fixed and how ?

Answer»

(a) Name the material of which a lightning conductor is made.

(b) What is the shape of the top end of a lightning conductor ?

(c) Where is the upper end of the lightning conductor fixed in a building ?

(d) Where is the lower end of the lightning conductor fixed and how ?

Discussion

6674.	What is the loudness of a normal conversation in decibels?
Answer» What is the loudness of a normal conversation in decibels?

Discussion

6675.	In which of the following case(s) is friction a friend?
Answer» In which of the following case(s) is friction a friend?

Discussion

6676.	If a force is applied on a wheel at a point as shown in the figure which makes it roll on the ground, then where is the force of friction acting? [2 MARKS]
Answer» If a force is applied on a wheel at a point as shown in the figure which makes it roll on the ground, then where is the force of friction acting? [2 MARKS]

6676.

If a force is applied on a wheel at a point as shown in the figure which makes it roll on the ground, then where is the force of friction acting? [2 MARKS]

Answer»

If a force is applied on a wheel at a point as shown in the figure which makes it roll on the ground, then where is the force of friction acting? [2 MARKS]

Discussion

6677.	Which of the following os not an advantage of friction? (a) it enables drawing to be made on paper (b) it enables fallen things to be picked up (c) it enables rubber pads to be rubbed off (d) it enables vehicles to move on ground
Answer» Which of the following os not an advantage of friction? (a) it enables drawing to be made on paper (b) it enables fallen things to be picked up (c) it enables rubber pads to be rubbed off (d) it enables vehicles to move on ground

Discussion

6678.	Which of the following option is correct in differentiating the gas molecules from solid ones?
Answer» Which of the following option is correct in differentiating the gas molecules from solid ones?

Discussion

6679.	State Archimedes' Principle. A ball weighing 4 kg of density 4000kgm−3 is completely immersed in water of density 1000kgm−3. Find the apparent weight of the ball in water. (g=10ms−2)
Answer» State Archimedes' Principle. A ball weighing 4 kg of density $4000 k g m^{- 3}$ is completely immersed in water of density $1000 k g m^{- 3}$ . Find the apparent weight of the ball in water. $(g = 10 m s^{- 2})$

Discussion

6680.	One atmospheric pressure is equal to
Answer» One atmospheric pressure is equal to

Discussion

6681.	Which of the following types of energy can be used to decompose water into its elements ? (a) heat energy (b) light energy (c) chemical energy (d) electrical energy
Answer» Which of the following types of energy can be used to decompose water into its elements ? (a) heat energy (b) light energy (c) chemical energy (d) electrical energy

Discussion

6682.	ice has a very high latent heat of fusion. What would have happened if it did not have a very high latent heat?
Answer» ice has a very high latent heat of fusion. What would have happened if it did not have a very high latent heat?

Discussion

6683.	What is the name of all of the space that our solar system exist in?
Answer» What is the name of all of the space that our solar system exist in?

Discussion

6684.	A pulley system can lift a load of 1200 N by an effort of 250 N. If the resistance due to the weight of movable parts and friction is 300 N. Find the total number of pulleys in the system.
Answer» A pulley system can lift a load of 1200 N by an effort of 250 N. If the resistance due to the weight of movable parts and friction is 300 N. Find the total number of pulleys in the system.

Discussion

6685.	Why Pluto is a drawf planet and doesn't count in all 8 planets ?
Answer» Why Pluto is a drawf planet and doesn't count in all 8 planets ?

Discussion

6686.	Our Milky Way galaxy is a ____ type galaxy.
Answer» Our Milky Way galaxy is a ____ type galaxy.

Discussion

6687.	Correct the sentences by replacing the underlined prepositions with the correct ones. Krishna was hit ___ a ball. Rituparna mistook her friend ___ someone else. She spoke to her family ___ the phone.
Answer» Correct the sentences by replacing the underlined prepositions with the correct ones. Krishna was hit ___ a ball. Rituparna mistook her friend ___ someone else. She spoke to her family ___ the phone.

6687.

Correct the sentences by replacing the underlined prepositions with the correct ones. Krishna was hit _ a ball. Rituparna mistook her friend _ someone else. She spoke to her family ___ the phone.

Answer»

Correct the sentences by replacing the underlined prepositions with the correct ones.

Krishna was hit ___ a ball.

Rituparna mistook her friend ___ someone else.

She spoke to her family ___ the phone.

Discussion

6688.	Can sound travel through non metallic solids
Answer» Can sound travel through non metallic solids

Discussion

6689.	A spanner of length 10cm is used to open a nut by applying a minimum force of 0.5N.calculate the moment of force required.
Answer» A spanner of length 10cm is used to open a nut by applying a minimum force of 0.5N.calculate the moment of force required.

Discussion

6690.	What is meant by the following statement? Weight of an object on Earth is 98 N
Answer» What is meant by the following statement? $Weight of an object on Earth is 98 N$

6690.

What is meant by the following statement? Weight of an object on Earth is 98 N

Answer»

What is meant by the following statement?

$Weight of an object on Earth is 98 N$

Discussion

6691.	The frequency of a sound wave determines:
Answer» The frequency of a sound wave determines:

Discussion

6692.	A car accelerates at 1.5 m/s2 on a straight road. How much is the increase in velocity in 4 s?
Answer» A car accelerates at $1.5 m / s^{2}$ on a straight road. How much is the increase in velocity in 4 s?

Discussion

6693.	When electric current is passed through an incandescent bulb, the bulb gives light. Identify the proper reason.
Answer» When electric current is passed through an incandescent bulb, the bulb gives light. Identify the proper reason.

Discussion

6694.	A batsman hits two balls of different masses 0.5 kg and 1 kg out of the stadium, the speed with which these balls travel is the same. What would be the ratio of their kinetic energies?
Answer» A batsman hits two balls of different masses $0.5 k g$ and $1 k g$ out of the stadium, the speed with which these balls travel is the same. What would be the ratio of their kinetic energies?

Discussion

6695.	When an object is immersed in a fluid, which of the following forces will act on the object?
Answer» When an object is immersed in a fluid, which of the following forces will act on the object?

6695.

When an object is immersed in a fluid, which of the following forces will act on the object?

Answer»

When an object is immersed in a fluid, which of the following forces will act on the object?

Discussion

6696.	The SI unit of acceleration is
Answer» The SI unit of acceleration is

Discussion

6697.	We can see the sun because it is glowing. How are we able to see the moon?
Answer» We can see the sun because it is glowing. How are we able to see the moon?

Discussion

6698.	Name the planets which lie between the Sun and the Earth.
Answer» Name the planets which lie between the Sun and the Earth.

Discussion

6699.	Which of the following is a possible cause of change in seasons on Earth?
Answer» Which of the following is a possible cause of change in seasons on Earth?

Discussion

6700.	When an object is subjected to an external stress (or pressure) with the aim to cause a reduction in its volume, this process is called ______________.
Answer» When an object is subjected to an external stress (or pressure) with the aim to cause a reduction in its volume, this process is called ______________.

Discussion

Explore topic-wise InterviewSolutions in .

On a glass plate a light wave is incident at an angle of 60∘. If the reflected and the refracted waves are mutually perpendicular, the refractive index of material is

What is meant by inter-molecular forces of attraction? How do they carry in solids, liquids and gases?

For same loudness and pitch ____.

The normal atmospheric pressure is : (a) 76 m of Hg (b) 76 cm of Hg (c) 76 Pa (d) 76 N m−2

If a monochromatic white light is passed through the prism, which of the following phenomenon could be observed?

A driver uses a convex mirror as a rear view mirror. Explain the reason with the help of a ray diagram.

Question 23 In Fig 4.1 you find that the bulb glows when an iron nail is placed between two ends of the wire. Complete the following sentences on the bases of this fact. (a) __________ is a metal. (b) Metals are good __________ of electricity.

why is venus so bright why is it so

Why is the Earth called 'the ocean of charges'?

Why venus and uranus rotate from east to west?

Which of the following is a suitable method to decrease friction?

The portion of the human eye on which image is formed is called ___ .

S.I. unit of moment of force is:

When an ebonite rod is rubbed with silk, the charge acquired by the rod is

A body when immersed in kerosene, it sinks. What relation could be established between the densities of the body and kerosene?

Which of the following invention belongs to Galileo?

Why a sheet of paper falls slower than when it is crumbled into a ball

What is larynx? What are its functions?

(a) What is the noise? Give two examples of sounds which are considered noise. (b) What is a musical sound? Give two examples of musical sounds.

The following figure shows the elliptical path of a planet about the sun. The two shaded parts have equal areas. If t1, t2 be the time taken by the planet to go from A to B and from C to D respectively.

A positively charged rod is brought close to one end of a neutral metallic plate. What type of charge is induced on the closest side of the plate?

Question 21 Two thermocol balls held close to each other move away from each other. When they are released, name the force which might be responsible for this phenomenon. Explain.

(a) Name the material of which a lightning conductor is made. (b) What is the shape of the top end of a lightning conductor ? (c) Where is the upper end of the lightning conductor fixed in a building ? (d) Where is the lower end of the lightning conductor fixed and how ?

What is the loudness of a normal conversation in decibels?

In which of the following case(s) is friction a friend?

If a force is applied on a wheel at a point as shown in the figure which makes it roll on the ground, then where is the force of friction acting? [2 MARKS]

Which of the following os not an advantage of friction? (a) it enables drawing to be made on paper (b) it enables fallen things to be picked up (c) it enables rubber pads to be rubbed off (d) it enables vehicles to move on ground

Which of the following option is correct in differentiating the gas molecules from solid ones?

State Archimedes' Principle. A ball weighing 4 kg of density 4000kgm−3 is completely immersed in water of density 1000kgm−3. Find the apparent weight of the ball in water. (g=10ms−2)

One atmospheric pressure is equal to

Which of the following types of energy can be used to decompose water into its elements ? (a) heat energy (b) light energy (c) chemical energy (d) electrical energy

ice has a very high latent heat of fusion. What would have happened if it did not have a very high latent heat?

What is the name of all of the space that our solar system exist in?

A pulley system can lift a load of 1200 N by an effort of 250 N. If the resistance due to the weight of movable parts and friction is 300 N. Find the total number of pulleys in the system.

Why Pluto is a drawf planet and doesn't count in all 8 planets ?

Our Milky Way galaxy is a ____ type galaxy.

Correct the sentences by replacing the underlined prepositions with the correct ones. Krishna was hit ___ a ball. Rituparna mistook her friend ___ someone else. She spoke to her family ___ the phone.

Can sound travel through non metallic solids

A spanner of length 10cm is used to open a nut by applying a minimum force of 0.5N.calculate the moment of force required.

What is meant by the following statement? Weight of an object on Earth is 98 N

The frequency of a sound wave determines:

A car accelerates at 1.5 m/s2 on a straight road. How much is the increase in velocity in 4 s?

When electric current is passed through an incandescent bulb, the bulb gives light. Identify the proper reason.

A batsman hits two balls of different masses 0.5 kg and 1 kg out of the stadium, the speed with which these balls travel is the same. What would be the ratio of their kinetic energies?

When an object is immersed in a fluid, which of the following forces will act on the object?

The SI unit of acceleration is

We can see the sun because it is glowing. How are we able to see the moon?

Name the planets which lie between the Sun and the Earth.

Which of the following is a possible cause of change in seasons on Earth?

When an object is subjected to an external stress (or pressure) with the aim to cause a reduction in its volume, this process is called ______________.

Question 23 In Fig 4.1 you find that the bulb glows when an iron nail is placed between two ends of the wire. Complete the following sentences on the bases of this fact. (a) is a metal. (b) Metals are good of electricity.

Correct the sentences by replacing the underlined prepositions with the correct ones. Krishna was hit _ a ball. Rituparna mistook her friend _ someone else. She spoke to her family ___ the phone.