Wave Motion

Q.

Are matter waves electromagnetic?

Q.

Why sound waves are mechanical waves?

Q. Sounds of frequencies below 20000 Hz are called ultrasonic sound.

1. True
2. False

Q.

Which of the following quantities is transferred during wave propagation?

1. Matter

2. Energy

3. Particles

4. None of these

Q.

Sound wave having a frequency greater than 20000 Hz is said to be

1. Ultrasonic

2. Sonic boom

3. Infrasonic

4. Supersonic

Q.

What is the difference between particle and wave?

Q.

In a metal, the sound waves that propagate are always transverse.

1. True
2. False

Q.

During propagation of a wave which of the following quantities is transferred?

1. Matter

2. Energy

3. Particles

4. None of these

Q.

A sound wave is an example of a ______wave.

Q.

Ultrasonic sounds are low-frequency waves.

1. True

2. False

Q. ntFormula of wave velocityn

Q.

Which of the following quantities is transferred during wave propagation?

1. speed

2. mass

3. matter

4. energy

Q. Which of the following is/are correct about sound (in air) and light wave?

1. Sound is a longitudinal wave.
2. Both can travel through the vacuum.
3. Light is a transverse wave.
4. Both of them are mechanical waves.

Q. What is ultra sound and infra sound with some example and explain

Q.

When a stone is thrown in a lake of still water, ___ moves along the surface.

1. matter

2. water

3. wave

4. stone

Q.

Waves transfer matter.

1. True

2. False

Q. The particles in a wave move at the same speed as the wave.

1. False
2. True

Q. Which is/are transferred during sound wave propagation?

1. Energy
2. Molecules
3. Electrons
4. Atoms

Q. Which is/are transferred during sound wave propagation?

1. Energy
2. Molecules
3. Electrons
4. Atoms

Q.

Sound waves whose frequency is greater than 20000 Hz is called ___.

1. supersonic sound

2. ultrasonic sound

3. infrasonic sound

4. sonic boom

Q.

In which direction do the particles of air move if sound wave travels from east to west?

1. North-South
2. None of these
3. East-West
4. Up-down

Q.

The regions of compressions and rare fractions of sound wave are established because

1. The sound wave undergoes diffraction behind obstacles

2. the reflected sound wave at fixed end interferes with the incident wave

3. the longitudinal movement of air molecules produce pressure fluctuations

4. the speed of the sound wave changes as it travels through a medium

Q.

In a gaseous medium, a sound wave is ______________.

1. both transverse and longitudinal

2. transverse

3. neither transverse nor longitudinal

4. longitudinal

Q.

When we are talking on a mobile phone, is there any particle moving from you to another end?

1. Yes

2. No