Tag: sound waves are longitudinal waves

Questions Related to sound waves are longitudinal waves

Which of the following equations represents a wave travelling along  $Y$-axis ?

physics study of sound types of waves sound as a wave of disturbance sound waves are longitudinal waves

  1. $x = A \sin ( k y - \omega t )$

  2. $y = A \sin ( k x - \omega t )$

  3. $y = A \sin k y \cos \omega t$

  4. $y = A \cos k y \sin \omega t$

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Correct Option: A

How many types of mechanical waves exist in physics?

physics study of sound types of waves sound as a wave of disturbance sound waves are longitudinal waves

  1. one

  2. two

  3. three

  4. four

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Correct Option: C
Explanation:

There are 3 types of mechanical waves
1.Transverse Waves
2.Longitudinal Waves
3.Surface Waves

State whether the given statement is True or False :

If a pebble is thrown into the water the ripples on the surface of water are created due to translatory motion of the water particles.

physics study of sound types of waves sound as a wave of disturbance sound waves are longitudinal waves

  1. True

  2. False

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Correct Option: B
Explanation:

when the pebble is thrown in water the disturbance created travels in all outwards directions over the surface of the water in the form of ripples these ripples are circular in shape .

so the statement is false .
so answer is B.

When a tuning fork vibrates, the waves produced in the stem are:

physics study of sound types of waves sound as a wave of disturbance sound waves are longitudinal waves

  1. longitudinal

  2. transverse

  3. both (a) and (b)

  4. none of these

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Correct Option: A
Explanation:

When tuning fork is sounded by striking its one end then the prongs vibrate in and out and stem vibrate up and down. Hence, vibration of prongs are transverse and those of stem are longitudinal. 

Hence Option A is correct

Transverse waves cannot travel through

physics study of sound types of waves sound as a wave of disturbance sound waves are longitudinal waves

  1. An iron rod

  2. Hydrogen gas

  3. A stretched nylon string

  4. Lubricating oil

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Correct Option: B
Explanation:

Transverse waves cannot propagate in a gas because there is no mechanism for driving motion perpendicular to the propagation of the wave.

so the answer is B.

Water waves are

physics study of sound types of waves sound as a wave of disturbance sound waves are longitudinal waves

  1. longitudinal

  2. transverse

  3. neither longitudinal nor transverse

  4. both longitudinal and transverse

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Correct Option: D
Explanation:

Water waves are both longitudinal and transverse. As a wave travels throught he water, the particles travel in clockwise circles. The radius of the circles decreases as the depth into the water.

Hence option (D) is correct.

When we pluck the wire of a sitar, the waves produced in the air are ___________.

physics study of sound types of waves sound as a wave of disturbance sound waves are longitudinal waves

  1. longitudinal

  2. transverse

  3. sometimes longitudinal and sometimes transverse

  4. electromagnetic

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Correct Option: B
Explanation:

When we pluck the wire of a sitar, the wave produced in the wire are transverse wave.

Hence option (B) is correct.

In a slinky

physics study of sound types of waves sound as a wave of disturbance sound waves are longitudinal waves

  1. Both transverse pulse as well as longitudinal pulse can be generated

  2. Both types of pulse cannot be generated

  3. Only a transverse pulse can be generated

  4. Only a longitudinal pulse can be generated

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Correct Option: A
Explanation:

Slinky is a dress which is tight-fitting, elastic and flexible. By fixing one end on a rigid support and holding the other end waves can be generated. By moving it back and forth, longitudinal waves can be generated. By moving up and down, transverse can be made.

Waves on water surface are

physics study of sound types of waves sound as a wave of disturbance sound waves are longitudinal waves

  1. Longitudinal

  2. Transverse

  3. Combination of longitudinal and transverse

  4. None of these

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Correct Option: C
Explanation:

Water surface exhibits a combination of both longitudinal and transverse waves. When the wave travels through the water, the particles travel in a circular path, both parallel and perpendicular to the direction of wave propagation. 

When you speak to your friend, the quantity having a non unique value in the sound produced is

physics study of sound types of waves sound as a wave of disturbance sound waves are longitudinal waves

  1. amplitude

  2. wave velocity

  3. frequency

  4. wavelength

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Correct Option: B
Explanation:

Amplitude and frequency depend on source and as frequency is different, wavelength also has to be different to maintain same speed as speed is constant for a medium in a particular condition.