MCQs on Waves and Oscillations

The unit of angular frequency is:

• rad/s

• Hz

• rad

• s

The time period of a simple pendulum depends on:

• Mass of bob

• Length of pendulum

• None of these

• Amplitude of oscillation

Energy in SHM is proportional to:

• Amplitude

• Time

• Frequency

• Amplitude²

In a damped oscillator, the damping force is proportional to:

• Velocity

• Acceleration

• Displacement

• Mass

Resonance occurs when:

• No relation

• External frequency < Natural frequency

• External frequency = Natural frequency

• External frequency > Natural frequency

Transverse waves propagate with particle motion:

• Perpendicular to wave direction

• At 45° to wave direction

• Parallel to wave direction

• Circular path

Sound waves are:

• Longitudinal only

• Both longitudinal & transverse

• Neither

• Transverse only

Superposition principle applies when:

• Waves travel in vacuum only

• Waves have equal frequency

• Two or more waves overlap

• Only one wave exists

Constructive interference occurs when path difference =

• λ/2

• λ

• (2n+1)λ/2

• nλ

The SI unit of sound intensity is:

• dB

• W/m

• W

• W/m²