The SI unit of frequency is ____.

In the graphical representation of sound waves ____ formed.

1. Only crests are
2. Only troughs are
3. Both crests and troughs are
4. None of the above

The angle between the direction of vibration of particles and the direction of propagation of a longitudinal wave is ____ degrees.

One end of a slinky was fixed to a wall. Its free end was moved back and forth continuously. What kind of wave does the pattern formed in the slinky represent?

1. Transverse wave
2. Longitudinal wave
3. Both 1 and 2
4. None of the above

Density variations are not caused among the particles of the medium when they vibrate ____ the direction of the wave propagation.

1. In
2. At 30-degree angle to
3. At 90-degree angle to
4. At 135-degree angle to

Pressure variations are caused among the particles of the medium when they vibrate _____ the direction of wave propagation.

1. In
2. At 30-degree angle to
3. At 90-degree angle to
4. At 135-degree angle to

Which of the following is not a consequence of longitudinal waves propagating through a medium?

1. Pressure variations
2. Density variations
3. Compressions and rarefactions
4. None of the above

The picture below shows the particles moving ____ to the direction of propagation of the wave.

1. Parallel
2. Coincident
3. Perpendicular
4. At 60-degree angle

Pressure variations are observed among the particles of a medium when a ______ wave propagates through it.

1. Longitudinal
2. Transverse
3. Both a and b
4. None of the above

Sound waves are ________ in nature.

1. Longitudinal only
2. Transverse only
3. Longitudinal and mechanical
4. Transverse and mechanical

One end of a slinky was fixed to a wall. Its free end was moved up and down continuously. What kind of wave does the pattern formed in the slinky represent?

1. Transverse wave
2. Longitudinal wave
3. Both a and b
4. None of the above

Which of the following is observed among the particles of a medium when a longitudinal wave propagates through it?

1. Pressure variations
2. Density variations
3. Compressions and rarefactions
4. All of the above

Light waves are _____ but not _____ in nature.

1. Mechanical, transverse
2. Transverse, mechanical
3. Longitudinal, mechanical
4. Mechanical, longitudinal

This slinky wave represents a ____.

1. Transverse wave
2. Longitudinal wave
3. Sound wave
4. Water wave

Compressions and rarefactions are formed as a result of ____ wave propagating through a material medium.

1. Transverse wave
2. Longitudinal wave
3. Sound wave
4. Water wave

In a transverse wave, the particles of the medium vibrate ____ to the direction of wave propagation.

1. Parallel
2. Perpendicular
3. At 30 degrees
4. At 80 degrees