9478 + Interview Questions in Physics Page 129 InterviewSolution

6401.	Why do we sprinkle fine powder on carrom board?
Answer» Why do we sprinkle fine powder on carrom board?

Discussion

6402.	When we hit the ground with a ball, why does the ball bounce back again?
Answer» When we hit the ground with a ball, why does the ball bounce back again?

Discussion

6403.	Which part of our body vibrates when we speak ?
Answer» Which part of our body vibrates when we speak ?

Discussion

6404.	The relative density of silver is 10.8. The density of water is 1000 kg m−3 The density of silver is:
Answer» The relative density of silver is $10.8$ . The density of water is $1000 k g m^{-} 3$ The density of silver is:

Discussion

6405.	A man places a rectangular glass slab of thickness 9 cm on a newspaper. On the top of the glass slab he places a glass beaker of negligible wall thickness containing water up to a height of 6 cm. If refractive index of glass is 1.5 and refractive index of water is (4/3), what is the apparent depth of the newspaper?
Answer» A man places a rectangular glass slab of thickness 9 cm on a newspaper. On the top of the glass slab he places a glass beaker of negligible wall thickness containing water up to a height of 6 cm. If refractive index of glass is 1.5 and refractive index of water is (4/3), what is the apparent depth of the newspaper?

Discussion

6406.	A sharp knife cuts better than a blunt knife. Which of the following option/options explain this?
Answer» A sharp knife cuts better than a blunt knife. Which of the following option/options explain this?

Discussion

6407.	What is DC and AC currents
Answer» What is DC and AC currents

Discussion

6408.	What is salt
Answer» What is salt

Discussion

6409.	We don’t see any objects when it is dark. Give reason
Answer» We don’t see any objects when it is dark. Give reason

Discussion

6410.	A man x can hear only upto 10 kHz and another man y upto 20 kHz. A note of frequency 500 Hz is produced before them from a stretched string. Then
Answer» A man x can hear only upto 10 kHz and another man y upto 20 kHz. A note of frequency 500 Hz is produced before them from a stretched string. Then

Discussion

6411.	When a body is immersed in water it displaces 4 kg of water. If the buoyant force acting on the body is K × 10 N. Then find K. (g = 10 m/s2)
Answer» When a body is immersed in water it displaces 4 kg of water. If the buoyant force acting on the body is K × 10 N. Then find K. (g = 10 m/s²)

Discussion

6412.	Friction is a necessary evil. Comment.
Answer» Friction is a necessary evil. Comment.

Discussion

6413.	In which of the following cases light bends towards the normal ray?
Answer» In which of the following cases light bends towards the normal ray?

Discussion

6414.	Where are the poles of disc magnet located
Answer» Where are the poles of disc magnet located

Discussion

6415.	Why doesn't the pole star appear to move in the sky?
Answer» Why doesn't the pole star appear to move in the sky?

Discussion

6416.	Choose the correct statements regarding rusting.
Answer» Choose the correct statements regarding rusting.

Discussion

6417.	Clsssify the sound produced by the following on thhe basiis of higher amplitude and higher frequency:- _ drum _roaring of lion _whistle -guitar _chirping of birds
Answer» Clsssify the sound produced by the following on thhe basiis of higher amplitude and higher frequency:- _ drum _roaring of lion _whistle -guitar _chirping of birds

6417.

Clsssify the sound produced by the following on thhe basiis of higher amplitude and higher frequency:- _ drum _roaring of lion _whistle -guitar _chirping of birds

Answer»

Clsssify the sound produced by the following on thhe basiis of higher amplitude and higher frequency:-

_ drum

_roaring of lion

_whistle

-guitar

_chirping of birds

Discussion

6418.	What is the difference between rhythm , melody and harmony?
Answer» What is the difference between rhythm , melody and harmony?

Discussion

6419.	A car weighing 1000 kg collides with a stationary 50 kg trolley, and imparts a velocity of 75 ms−1 to it. Find the speed with which the car was moving (Assume that the car comes to a stop after the collision and neglect friction at the time of collision).
Answer» A car weighing $1000 k g$ collides with a stationary $50 k g$ trolley, and imparts a velocity of $75 m s^{- 1}$ to it. Find the speed with which the car was moving (Assume that the car comes to a stop after the collision and neglect friction at the time of collision).

Discussion

6420.	Question 3(d) Earthquakes can be predicted in advance.
Answer» Question 3(d) Earthquakes can be predicted in advance.

6420.

Question 3(d) Earthquakes can be predicted in advance.

Answer»

Question 3(d)

Earthquakes can be predicted in advance.

Discussion

6421.	Which of the following statements are true about magnetic flux density?
Answer» Which of the following statements are true about magnetic flux density?

Discussion

6422.	Two bodies are found to repel each other, what kind of fundamental force could this possibly be?
Answer» Two bodies are found to repel each other, what kind of fundamental force could this possibly be?

Discussion

6423.	What name is given to the flash of light which occurs in the sky during the rainy season ?
Answer» What name is given to the flash of light which occurs in the sky during the rainy season ?

Discussion

6424.	Why do like charges repel and unlike charges attract each other?
Answer» Why do like charges repel and unlike charges attract each other?

Discussion

6425.	During ancient times, people believed that Earth was the centre of the universe and all celestial bodies including the Sun revolved around the Earth. If this hypothesis was to be true, then:
Answer» During ancient times, people believed that Earth was the centre of the universe and all celestial bodies including the Sun revolved around the Earth. If this hypothesis was to be true, then:

Discussion

6426.	Explain how potters are able to carry heavy load on their head? On the basis of force and pressure in 50 to 70 words
Answer» Explain how potters are able to carry heavy load on their head? On the basis of force and pressure in 50 to 70 words

Discussion

6427.	Why is the metal covering of an electrical appliance earthed?
Answer» Why is the metal covering of an electrical appliance earthed?

Discussion

6428.	Floating and sinking of an object depends on:
Answer» Floating and sinking of an object depends on:

Discussion

6429.	What are the two laws of refraction?
Answer» What are the two laws of refraction?

Discussion

6430.	A student observes the object given in figure through a pinhole camera. Which of the diagrams given in the options depict the image seen by her correctly?
Answer» A student observes the object given in figure through a pinhole camera. Which of the diagrams given in the options depict the image seen by her correctly?

Discussion

6431.	How does friction produce heat?
Answer» How does friction produce heat?

Discussion

6432.	The density of copper is 3 g cm−3. Express it in kg m−3.
Answer» The density of copper is $3 g c m^{- 3}$ . Express it in $k g m^{- 3}$ .

Discussion

6433.	Convert 37∘C to Fahrenhiet scale.
Answer» Convert $37^{\circ} C$ to Fahrenhiet scale.

Discussion

6434.	The given graph shows the displacement versus time relation for a disturbance travelling with velocity of 1500 ms−1 . Calculate the wavelength of the disturbance
Answer» The given graph shows the displacement versus time relation for a disturbance travelling with velocity of $1500 m s^{- 1}$ . Calculate the wavelength of the disturbance

Discussion

6435.	When a force of 1 N acts on a mass of 1 kg that is free to move, the object moves with
Answer» When a force of 1 N acts on a mass of 1 kg that is free to move, the object moves with

Discussion

6436.	How does a force of 10 N differ from a force of -10N?
Answer» How does a force of 10 N differ from a force of -10N?

Discussion

6437.	Why is the Earth called as "the ocean of charges"?
Answer» Why is the Earth called as "the ocean of charges"?

Discussion

6438.	A jar of syrup with 13cm of height is kept on the floor. Find the pressure of water at the bottom of the jar. (Ignore the atmospheric pressure and use the acceleration due to gravity, g=10m/s2 and, the density of water 1000kg/m3)
Answer» A jar of syrup with 13cm of height is kept on the floor. Find the pressure of water at the bottom of the jar. (Ignore the atmospheric pressure and use the acceleration due to gravity, $g = 10 m / s^{2}$ and, the density of water $1000 k g / m^{3}$ )

6438.

A jar of syrup with 13cm of height is kept on the floor. Find the pressure of water at the bottom of the jar. (Ignore the atmospheric pressure and use the acceleration due to gravity, g=10m/s2 and, the density of water 1000kg/m3)

Answer»

A jar of syrup with 13cm of height is kept on the floor. Find the pressure of water at the bottom of the jar.
(Ignore the atmospheric pressure and use the acceleration due to gravity,
$g = 10 m / s^{2}$
and, the density of water $1000 k g / m^{3}$ )

Discussion

6439.	Assertion(A): Earthquake occurs due to the movement of tectonic plates. Reason(R): When tectonic plates compress each other, pressure is built up.
Answer» Assertion(A): Earthquake occurs due to the movement of tectonic plates. Reason(R): When tectonic plates compress each other, pressure is built up.

Discussion

6440.	Explain the experiment counted by Benjamin Franklin that stood spark share some simalrity with lighting.?
Answer» Explain the experiment counted by Benjamin Franklin that stood spark share some simalrity with lighting.?

Discussion

6441.	Upon charging by conduction, the mass of a body may :
Answer» Upon charging by conduction, the mass of a body may :

Discussion

6442.	Sound is created by:
Answer» Sound is created by:

Discussion

6443.	50g of copper is heated to increase its temperature by 10∘C. If the same quantity of heat is given to 10g of water, then the rise in its temperature is (specific heat of copper =420J/kg/∘C)
Answer» $50 g$ of copper is heated to increase its temperature by $10^{\circ} C$ . If the same quantity of heat is given to $10 g$ of water, then the rise in its temperature is (specific heat of copper $= 420 J / k g /^{\circ} C$ )

Discussion

6444.	Which of the following mirror always form virtual and diminished image irrespective of object location?
Answer» Which of the following mirror always form virtual and diminished image irrespective of object location?

Discussion

6445.	when is pressure exerted more while walking or standing
Answer» when is pressure exerted more while walking or standing

Discussion

6446.	Which team is pulling the other?
Answer» Which team is pulling the other?

6446.

Which team is pulling the other?

Answer»

Which team is pulling the other?

Discussion

6447.	A tester is made with the two terminals of a battery connected to separate wires, each with one end free. A light bulb is also connected as a part of the circuit. Now an object is used to connect the free ends, and it is observed that the light bulb does not glow, in other words, there is no electricity flowing. Which of the following could be that object?
Answer» A tester is made with the two terminals of a battery connected to separate wires, each with one end free. A light bulb is also connected as a part of the circuit. Now an object is used to connect the free ends, and it is observed that the light bulb does not glow, in other words, there is no electricity flowing. Which of the following could be that object?

Discussion

6448.	Rohan wants to coat his magic stick made of carbon with copper. He takes a battery, a container filled half with copper sulphate solution, a copper plate and his magic stick. But he is confused about which terminal of the battery to connect to copper plate and which terminal to his magic stick. What should he do?
Answer» Rohan wants to coat his magic stick made of carbon with copper. He takes a battery, a container filled half with copper sulphate solution, a copper plate and his magic stick. But he is confused about which terminal of the battery to connect to copper plate and which terminal to his magic stick. What should he do?

Discussion

6449.	Statement 1: For the same force acting on two different surfaces, more pressure is developed on the surface with a smaller area. Statement 2: Pressure is defined as force per unit area.
Answer» Statement 1: For the same force acting on two different surfaces, more pressure is developed on the surface with a smaller area. Statement 2: Pressure is defined as force per unit area.

Discussion

6450.	A sound becomes irritating or unpleasant to hear, if its loudness exceeds _________.
Answer» A sound becomes irritating or unpleasant to hear, if its loudness exceeds _________.

Discussion

Explore topic-wise InterviewSolutions in .

Why do we sprinkle fine powder on carrom board?

When we hit the ground with a ball, why does the ball bounce back again?

Which part of our body vibrates when we speak ?

The relative density of silver is 10.8. The density of water is 1000 kg m−3 The density of silver is:

A sharp knife cuts better than a blunt knife. Which of the following option/options explain this?

What is DC and AC currents

What is salt

We don’t see any objects when it is dark. Give reason

A man x can hear only upto 10 kHz and another man y upto 20 kHz. A note of frequency 500 Hz is produced before them from a stretched string. Then

When a body is immersed in water it displaces 4 kg of water. If the buoyant force acting on the body is K × 10 N. Then find K. (g = 10 m/s​​​​​​2)

Friction is a necessary evil. Comment.

In which of the following cases light bends towards the normal ray?

Where are the poles of disc magnet located

Why doesn't the pole star appear to move in the sky?

Choose the correct statements regarding rusting.

Clsssify the sound produced by the following on thhe basiis of higher amplitude and higher frequency:- _ drum _roaring of lion _whistle -guitar _chirping of birds

What is the difference between rhythm , melody and harmony?

A car weighing 1000 kg collides with a stationary 50 kg trolley, and imparts a velocity of 75 ms−1 to it. Find the speed with which the car was moving (Assume that the car comes to a stop after the collision and neglect friction at the time of collision).

Question 3(d) Earthquakes can be predicted in advance.

Which of the following statements are true about magnetic flux density?

Two bodies are found to repel each other, what kind of fundamental force could this possibly be?

What name is given to the flash of light which occurs in the sky during the rainy season ?

Why do like charges repel and unlike charges attract each other?

During ancient times, people believed that Earth was the centre of the universe and all celestial bodies including the Sun revolved around the Earth. If this hypothesis was to be true, then:

Explain how potters are able to carry heavy load on their head? On the basis of force and pressure in 50 to 70 words

Why is the metal covering of an electrical appliance earthed?

Floating and sinking of an object depends on:

What are the two laws of refraction?

A student observes the object given in figure through a pinhole camera. Which of the diagrams given in the options depict the image seen by her correctly?

How does friction produce heat?

The density of copper is 3 g cm−3. Express it in kg m−3.

Convert 37∘C to Fahrenhiet scale.

The given graph shows the displacement versus time relation for a disturbance travelling with velocity of 1500 ms−1 . Calculate the wavelength of the disturbance

When a force of 1 N acts on a mass of 1 kg that is free to move, the object moves with

How does a force of 10 N differ from a force of -10N?

Why is the Earth called as "the ocean of charges"?

A jar of syrup with 13cm of height is kept on the floor. Find the pressure of water at the bottom of the jar. (Ignore the atmospheric pressure and use the acceleration due to gravity, g=10m/s2 and, the density of water 1000kg/m3)

Assertion(A): Earthquake occurs due to the movement of tectonic plates. Reason(R): When tectonic plates compress each other, pressure is built up.

Explain the experiment counted by Benjamin Franklin that stood spark share some simalrity with lighting.?

Upon charging by conduction, the mass of a body may :

Sound is created by:

50g of copper is heated to increase its temperature by 10∘C. If the same quantity of heat is given to 10g of water, then the rise in its temperature is (specific heat of copper =420J/kg/∘C)

Which of the following mirror always form virtual and diminished image irrespective of object location?

when is pressure exerted more while walking or standing

Which team is pulling the other?

Statement 1: For the same force acting on two different surfaces, more pressure is developed on the surface with a smaller area. Statement 2: Pressure is defined as force per unit area.

A sound becomes irritating or unpleasant to hear, if its loudness exceeds _________.

When a body is immersed in water it displaces 4 kg of water. If the buoyant force acting on the body is K × 10 N. Then find K. (g = 10 m/s2)