11th Physics Weekly Test - 2 ( Waves )

MABS Institution

11th Physics Weekly Test - 2 ( Waves )-Aug 2020

Time : 1.30 Hours

Part - A

Generic 2 - Answer All Question

A steel wire 0.72 m long has a mass of 5.0 x 10^-3 kg. If the wire is under a tension of 60 N.
What is the speed of transverse waves on the wire?

What is meant by reverberation?

A student performed an experiment to determine the speed of sound in air using the resonance column method. The length of the air column that resonates in the fundamental mode with a tuning fork is 0.2 m. If the length is varied such that the same tuning fork resonates with the first overtone at 0.7 m. Calculate the end correction.

Define particle velocity.

Mention the important properties which medium should possess for propagation of waves.

Explain the beat phenomenon.

What is the difference between an echo and a reverberation?

What are transverse waves?. Give one example.

Give the relation between velocity v, angular frequency \(\omega\) and wave number \(\lambda\)?

Define the term wave motion?

Part - B

Generic 5 - Answer All Question

How will you determine the velocity of sound using resonance air column apparatus?

What is meant by Doppler effect?.
Discuss the following cases
(1) Source in motion and Observer at rest
(a) Source moves towards observer
(b) Source moves away from the observer
(2) Observer in motion and Source at rest.
(a) Observer moves towards Source
(b) Observer resides away from the Source
(3) Both are in motion
(a) Source and Observer approach each other
(b) Source and Observer resides from each other
(c) Source chases Observer
(d) Observer chases Source

A fruit dropped from the top of a tree of height 200 m high splashes into the water of a pond near the base of the tree. When is the splash heard at the top given that the speed of sound in air is 340 ms^-1.

What are stationary waves? Explain the formation of stationary waves and also write down the characteristics of stationary waves.
What is a sonometer? Give its construction and working. Explain how to determine the frequency of tuning fork using sonometer.

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11th Physics Weekly Test - 2 ( Waves )

MABS Institution

11th Physics Weekly Test - 2 ( Waves )-Aug 2020

Part - A

Generic 2 - Answer All Question

A steel wire 0.72 m long has a mass of 5.0 x 10-3 kg. If the wire is under a tension of 60 N. What is the speed of transverse waves on the wire?

What is meant by reverberation?

Define particle velocity.

Mention the important properties which medium should possess for propagation of waves.

Explain the beat phenomenon.

What is the difference between an echo and a reverberation?

What are transverse waves?. Give one example.

Give the relation between velocity v, angular frequency \(\omega\) and wave number \(\lambda\)?

Define the term wave motion?

Part - B

Generic 5 - Answer All Question

How will you determine the velocity of sound using resonance air column apparatus?

A fruit dropped from the top of a tree of height 200 m high splashes into the water of a pond near the base of the tree. When is the splash heard at the top given that the speed of sound in air is 340 ms-1.

What are stationary waves? Explain the formation of stationary waves and also write down the characteristics of stationary waves.

What is a sonometer? Give its construction and working. Explain how to determine the frequency of tuning fork using sonometer.

Comment

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A steel wire 0.72 m long has a mass of 5.0 x 10^-3 kg. If the wire is under a tension of 60 N.
What is the speed of transverse waves on the wire?

A fruit dropped from the top of a tree of height 200 m high splashes into the water of a pond near the base of the tree. When is the splash heard at the top given that the speed of sound in air is 340 ms^-1.