ICS Part 1 Physics English Medium Chapter 8 Online Short Questions Test with Answers

Online Short Questions For Chapter 8 "ICS Part 1 Physics Chapter 8 Short Questions Test "

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Physics - ICS Part 1 Physics Chapter 8 Short Questions Test

Question # 1

Explain why sound travels faster in warm air than in cold air?

Ans 1:

Question # 2

What do you mean by the term progressive waves?

Ans 1: A wave which tr5ansfer energy by moving away from the source of disturbance is called progressive wave.For example, longitudinal and transverse waves.

Question # 3

What is effect of pressure on the speed of sound in gases?

Ans 1:

Question # 4

Which is richer in harmonic, and why:
(A) an open organ pipe (B) A closed organ pipe.

Ans 1: The pipe, which is open at both ends, is richer in harmonics.
At open end molecules of the air are free to move and an antinode is formed while the movement of air molecules is restricted at the closed end and a node is formed.
Therefore, the pipe open at both ends have antinode at each end and is richer in harmonics.

Question # 5

What is progressive wave? Give the name of two progressive waves.

Ans 1: A wave which transfer energy by moving away from the source of disturbance is called progressive wave.

For Example, longitudinal and transverse waves.

Question # 6

How are beats useful in tuning musical instruments?

Ans 1: Beats are used in tuning musical instruments. One can use beats to tune a string of musical instrument such as plano by beating a not against a note oh known frequency.The string is then adjusted to the desired frequency by tightening or loosening it until no beats are heard.

Question # 7

Can Doppler Effect be applied to electromagnetic waves? Give an example.

Ans 1: Yes, Doppler effect can be applied to electromagnetic waves. For example, in radar systems, the Doppler effect is used to determine the elevation and speed of aeroplane.

Question # 8

A wave is produce along a stretched string but some of its particles permanently show zero displacement . What type of wave is it?

Ans 1: A wave is produced along a stretched string but some of its particles permanently show zero displacement. It is a stationary wave and points at zero displacement are called nodes.

Question # 9

Explain the term red shift and blue shift in Dopplers Effect.

Ans 1: Stars moving away from the Earth show red shift. The emitted waves have a longer wavelength than if the star had been at rest. So the spectrum is shifted towards longer wavelength.
Stars moving towards the Earth show blue shift. This is because the wavelength of light emitted by the star is shorter than if the star had been at rest. So the spectrum is shifted towards shorter wavelength.

Question # 10

How stationary waves are produced in a medium

Ans 1: Theses waves are produced by the superposition of two identical waves traveling in opposite direction. When a stretched string clamped at its two ends is plucked then the stationary waves are produced.

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Prepare Complete Set Wise Questions For Chapter 8 "ICS Part 1 Physics Chapter 8 Short Questions Test "

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Set 2

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Set 3

10 Questions
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ICS Part 1 Physics Chapter 8 Short Questions Test - Set 1

Question # 1

Explain why sound travels faster in warm air than in cold air?

Ans 1:

Question # 2

What do you mean by the term progressive waves?

Ans 1: A wave which tr5ansfer energy by moving away from the source of disturbance is called progressive wave.For example, longitudinal and transverse waves.

Question # 3

What is effect of pressure on the speed of sound in gases?

Ans 1:

Question # 4

Which is richer in harmonic, and why:
(A) an open organ pipe (B) A closed organ pipe.

Ans 1: The pipe, which is open at both ends, is richer in harmonics.
At open end molecules of the air are free to move and an antinode is formed while the movement of air molecules is restricted at the closed end and a node is formed.
Therefore, the pipe open at both ends have antinode at each end and is richer in harmonics.

Question # 5

What is progressive wave? Give the name of two progressive waves.

Ans 1: A wave which transfer energy by moving away from the source of disturbance is called progressive wave.

For Example, longitudinal and transverse waves.

Question # 6

How are beats useful in tuning musical instruments?

Ans 1: Beats are used in tuning musical instruments. One can use beats to tune a string of musical instrument such as plano by beating a not against a note oh known frequency.The string is then adjusted to the desired frequency by tightening or loosening it until no beats are heard.

Question # 7

Can Doppler Effect be applied to electromagnetic waves? Give an example.

Ans 1: Yes, Doppler effect can be applied to electromagnetic waves. For example, in radar systems, the Doppler effect is used to determine the elevation and speed of aeroplane.

Question # 8

A wave is produce along a stretched string but some of its particles permanently show zero displacement . What type of wave is it?

Ans 1: A wave is produced along a stretched string but some of its particles permanently show zero displacement. It is a stationary wave and points at zero displacement are called nodes.

Question # 9

Explain the term red shift and blue shift in Dopplers Effect.

Ans 1: Stars moving away from the Earth show red shift. The emitted waves have a longer wavelength than if the star had been at rest. So the spectrum is shifted towards longer wavelength.
Stars moving towards the Earth show blue shift. This is because the wavelength of light emitted by the star is shorter than if the star had been at rest. So the spectrum is shifted towards shorter wavelength.

Question # 10

How stationary waves are produced in a medium

Ans 1: Theses waves are produced by the superposition of two identical waves traveling in opposite direction. When a stretched string clamped at its two ends is plucked then the stationary waves are produced.

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ICS Part 1 Physics Chapter 8 Short Questions Test - Set 2

Question # 1

Can Doppler Effect be applied to electromagnetic waves? Give an example.

Ans 1: Yes, Doppler effect can be applied to electromagnetic waves. For example, in radar systems, the Doppler effect is used to determine the elevation and speed of aeroplane.

Question # 2

Which is richer in harmonic, and why:
(A) an open organ pipe (B) A closed organ pipe.

Ans 1: The pipe, which is open at both ends, is richer in harmonics.
At open end molecules of the air are free to move and an antinode is formed while the movement of air molecules is restricted at the closed end and a node is formed.
Therefore, the pipe open at both ends have antinode at each end and is richer in harmonics.

Question # 3

State the principal of superposition.

Ans 1:

Question # 4

What is radar?

Ans 1: It is acronym for Radio Detection and Ranging. It is a device which transmits and receive radio waves which are used to determine height and speed of aeroplane.

Question # 5

How stationary waves are produced in a medium.

Ans 1: These waves are produced by the superposition of two identical waves travelling in opposite direction. When a stretched string clamped at its two ends is plucked then the stationary waves are produced.

Question # 6

What happens when a jet plane like a concorde files faster than the speed of sound?

Ans 1: A conical surface of concentrated sound energy sweeps over the ground as a supersonic plane passes overhead. It is known as sonic boom.

Question # 7

What are the factors on which speed of sound in air depends?

Ans 1:
1. Speed of sound is inversely proportional to the square root of densities of gases.
2. Speed of sound increases with the increase in temperature
3. Speed of sound is not affected by a variation in the pressure of the gas.

Question # 8

Explain why sound travels faster in warm air than in cold air?

Ans 1:

Question # 9

Explain the terms Crest, Trough, Node and Antinode.

Ans 1: Crest: The portion of the wave above the mean level is called crest.
Trough: The portion of the wave below the mean level is called trough.
Nodes: The points of zero displacement in stationary waves are called nodes.
Anti-nodes: The points of maximum displacement in stationary waves are called antinodes.

Question # 10

What feature do longitudinal waves have in common with transverse waves?

Ans 1: The common features are:
1. Bothe are mechanical waves.
2. Both transport energy from one place to another.
3. Both satisfy the equation

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ICS Part 1 Physics Chapter 8 Short Questions Test - Set 3

Question # 1

What is apparent change in frequency when source is moving away from stationary observer?

Ans 1:

Question # 2

As the result of distant explosion an observer senses a ground tremor and then hears the explosions.Explain the time difference.

Ans 1: The waves produced by the explosion reach the observer quickly through the ground as compared to the sound waves reaching through the air. This is due to the reason that sound travels faster in solid than gases.

Question # 3

What is the effect of density on speed of sound?

Ans 1:

Question # 4

What is meant by sonar? Explain.

Ans 1: Sonar is an acronym derived from "sound navigation and ranging".Sonar is the name os technique for detecting the presence of objects under water by acoustical echo.
It employs the Doppler Effect, in which an apparent change in frequency occurs when the source and the observer are in relative motion, Its applications are detection of submarines, mine hunting and depth measurement of sea.

Question # 5

How stationary waves are produced in a medium

Ans 1: Theses waves are produced by the superposition of two identical waves traveling in opposite direction. When a stretched string clamped at its two ends is plucked then the stationary waves are produced.

Question # 6

What is progressive wave? Give the name of two progressive waves.

Ans 1: A wave which transfer energy by moving away from the source of disturbance is called progressive wave.

For Example, longitudinal and transverse waves.

Question # 7

Give any two applications of Doppler Effect.

Ans 1: Doppler effect is used:
1. In radar systems, the Doppler effect is used to determine the elevation and speed of aero plane.
2. Astronomers use the Doppler Effect to calculate the speed of distant stars and galaxies.

Question # 8

How should a source of sound move with.r.t an observer so that the frequency of its sound does not change?

Ans 1: If sound source is moving in circular path with the observer at the center of the circle then relative velocity of the observer with respect to the source of sound is zero, there will be no change in the frequency of sound.

Question # 9

What do you mean by the term progressive waves?

Ans 1: A wave which tr5ansfer energy by moving away from the source of disturbance is called progressive wave.For example, longitudinal and transverse waves.

Question # 10

Define Doppler Effect.

Ans 1: The apparent change in the frequency of sound due to relative motion between the observer and source of sound is called Doppler Effect. If the observer and source of sound are approaching then the frequency of sound will increase and vice versa.

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ICS Part 1 Physics Short Questions Test

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ICS Part 1 Physics English Medium Chapter 8 Online Short Questions Test with Answers

Online Short Questions For Chapter 8 "ICS Part 1 Physics Chapter 8 Short Questions Test "

Physics - ICS Part 1 Physics Chapter 8 Short Questions Test

Explain why sound travels faster in warm air than in cold air?

What do you mean by the term progressive waves?

What is effect of pressure on the speed of sound in gases?

Which is richer in harmonic, and why:(A) an open organ pipe (B) A closed organ pipe.

What is progressive wave? Give the name of two progressive waves.

How are beats useful in tuning musical instruments?

Can Doppler Effect be applied to electromagnetic waves? Give an example.

A wave is produce along a stretched string but some of its particles permanently show zero displacement . What type of wave is it?

Explain the term red shift and blue shift in Dopplers Effect.

How stationary waves are produced in a medium

Prepare Complete Set Wise Questions For Chapter 8 "ICS Part 1 Physics Chapter 8 Short Questions Test "

Set 1

Set 2

Set 3

ICS Part 1 Physics Chapter 8 Short Questions Test - Set 1

Explain why sound travels faster in warm air than in cold air?

What do you mean by the term progressive waves?

What is effect of pressure on the speed of sound in gases?

Which is richer in harmonic, and why:(A) an open organ pipe (B) A closed organ pipe.

What is progressive wave? Give the name of two progressive waves.

How are beats useful in tuning musical instruments?

Can Doppler Effect be applied to electromagnetic waves? Give an example.

A wave is produce along a stretched string but some of its particles permanently show zero displacement . What type of wave is it?

Explain the term red shift and blue shift in Dopplers Effect.

How stationary waves are produced in a medium

ICS Part 1 Physics Chapter 8 Short Questions Test - Set 2

Can Doppler Effect be applied to electromagnetic waves? Give an example.

Which is richer in harmonic, and why:(A) an open organ pipe (B) A closed organ pipe.

State the principal of superposition.

What is radar?

How stationary waves are produced in a medium.

What happens when a jet plane like a concorde files faster than the speed of sound?

What are the factors on which speed of sound in air depends?

Explain why sound travels faster in warm air than in cold air?

Explain the terms Crest, Trough, Node and Antinode.

What feature do longitudinal waves have in common with transverse waves?

ICS Part 1 Physics Chapter 8 Short Questions Test - Set 3

What is apparent change in frequency when source is moving away from stationary observer?

As the result of distant explosion an observer senses a ground tremor and then hears the explosions.Explain the time difference.

What is the effect of density on speed of sound?

What is meant by sonar? Explain.

How stationary waves are produced in a medium

What is progressive wave? Give the name of two progressive waves.

Give any two applications of Doppler Effect.

How should a source of sound move with.r.t an observer so that the frequency of its sound does not change?

What do you mean by the term progressive waves?

Define Doppler Effect.

ICS Part 1 Physics Short Questions Test

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Which is richer in harmonic, and why:
(A) an open organ pipe (B) A closed organ pipe.

Which is richer in harmonic, and why:
(A) an open organ pipe (B) A closed organ pipe.

Which is richer in harmonic, and why:
(A) an open organ pipe (B) A closed organ pipe.