Mechanical Waves

Q.

Which of the following is/are true about a mechanical wave?

1. A disturbance that propagates through the medium

2. An oscillation that propagates through the medium

3. It is accompanied by energy transfer

4. All of these

Q.

Vibration can be defined as the

1. stretching of a membrane

2. roughness of a membrane

3. circular motion of a membrane

4. to and fro motion of a membrane

Q.

To and fro motion of an object is also known as:

1. Oscillatory motion

2. Circular motion

3. Accelerated motion

4. None of the above

Q.

The sound is produced because of _______ of a particle.

1. Vibrations

2. Rotations

3. Charge

4. None of these

Q.

Sound travels in the form of _____.

1. both as waves and particles

2. particles

3. either particles or waves, depending on the medium

4. waves

Q. A sound wave in air propagate similar to _________.

1. compressions and relaxations in a slinky
2. a ball thrown into the air
3. an ocean wave
4. a light wave.

Q.

A mechanical wave needs a material medium for propagation.

1. True

2. False

Q. Sound and light waves, both ______.

1. have the same speed
2. travel through vacuum
3. obey the laws of reflection
4. are forms of energy

Q. waves require a medium for their propagation.

1. Mechanical
2. Non-mechanical
3. Light

Q. Which of these is not an example of mechanical wave?

1. Sound waves
2. Light waves
3. Seismic waves
4. Water waves