Oscillations and Waves

The following are the examples of transverse waves:

• ripples on the surface of water

• soundwave

• vibrations in a guitar string

• seismic wave

The following are the characteristics of longitudinal waves:

• consists of crests and throughs

• can propagate through solids, liquids, and gasses

• consists of compressions and rarefactions

• the vibrations are parallel to the direction of wave travel

The maximum displacement of a point of a wave from its rest position or equilibrium point is called . . . .

• Amplitude

• Frequency

• Crests

• Period

The number of waves passing a point each second is . . . .

• Period

• Longitudinal waves

• Frequency

• Wavelength

The following are the characteristics of longitudinal waves:

• consists of crests and throughs

• one of the example if the vibration of strings

• the vibration is parallel to the direction of propagation

• can propagate without any mediums

Wave period means . . . .

• the highest point above the rest position

• the time taken for a full cycle of the wave

• the maximum displacement of a point of a wave from its rest position

• the number of waves passing a point each second

Calculate the time period of a wave with a frequency of 50 Hz.

• 50 seconds

• 5 seconds

• 0.2 second

• 0.02 second

A pendulum is observed to complete 30 full cycles in 120 seconds. Determine the period of the pendulum.

• 90 seconds

• 6 seconds

• 4 seconds

• 0.25 second

A pendulum has a time period of 0.4 s. What is its frequency?

• 0.4 Hz

• 1.0 Hz

• 2.5 Hz

• 4.0 Hz

A pendulum swings 5 times in a second. What is its frequency?

• 0.2 s

• 0.5 s

• 1.0 s

• 5.0 s