Longitudinal Waves

Q.

What is a plane polarized light?

Q.

Can sound waves travel in a vacuum?

Q.

Why do longitudinal waves travel faster than transverse waves?

Q.

What are the source of sound?

Q.

Ocean wave is an example of a longitudinal wave.

1. Light

2. Sound

Q.

Why is sound not a transverse wave?

Q. Explain the statement “Wave transfer energy and not matter".
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Q.

What is a longitudinal wave ? In which medium : solid, liquid or gas, can it be produced ?

Q. If a longitudinal wave travels from East to West, then the particles of air move in:

1. East-West
2. North-South
3. North-West
4. South-East

Q.

Which of these is an example of longitudinal wave?

1. Visible light

2. Microwaves

3. Radio waves

4. Sound

Q.

_____ waves consist of crests and troughs.

Q.

Define transverse wave.

Q.

Do the Longitudinal waves transfer the matter?

Q.

Particles in a longitudinal wave vibrate perpendicular to the direction of the wave propagation.

1. True

2. False

Q.

Name the two types of waves which can be generated in a long flexible spring (or slinky).

Q. Which of the following statements is/are correct?

1. A compression in a longitudinal wave is represented by a crest in pressure-distance graph.
2. A compression in a longitudinal wave is represented by a trough in pressure-distance graph.
3. A rarefaction in a longitudinal wave is represented by a crest in pressure-distance graph.
4. A rarefaction in a longitudinal wave is represented by a trough in pressure-distance graph.

Q. In a gaseous medium, a sound wave is ___.

1. (a) and (b) above.
2. longitudinal
3. transverse
4. non-mechanical

Q. High density region in a longitudinal wave is known as _____.

1. rarefaction
2. crest
3. trough
4. compression

Q.

Name the two kinds of waves in form of which sound travels in a medium.

Q.

A stone is dropped on the surface of the water in a pond. Name the type of waves produced.

Q.

State the general name of the waves in which the particles of the medium vibrate :

(i) in the same direction as wave.

(ii) at right angles to the direction of wave.

Q.

Which of the following is/are transverse wave(s)?

1. Ultrasonic wave in air

2. Infrasonic wave in air

3. Infrared waves in air

4. Radio waves in vacuum

Q.

What is the nature of sound waves in air ?

Q.

If any explosion took place at the bottom of the lake, what kind of shock waves in water takes place?

Q.

A longitudinal wave travels from east to west in the air. In which direction do the particles of air move?

Q.

Why are sound waves called mechanical waves?

Q. In a longitudinal wave, particles vibrate ______ the direction of the propagation of the wave.

1. along
2. perpendicular to
3. independent of
4. oblique to

Q.

What type of wave is represented :

(a) by density - distance graph ?

(b) by displacement - distance graph ?

Q.

What type of waves are illustrated by the movement of a rope whose one end is fixed to a pole and the other end is moved up and down ?

Q.

Which of the following terms apply to sound waves in air and which to water waves ?

Transverse, Rarefaction, Trough, Crest, Compression, Longitudinal