Physics Easy PPSC Uploaded: 17 Aug 2026

The Doppler effect refers to the change in:

Correct Answer: Option D — Frequency of a wave due to relative motion

Explanation:

The Doppler effect describes the apparent change in frequency or pitch of a wave observed by someone due to relative motion between the sour...

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Resonance occurs when the frequency of an external force matches the:

Ultrasonic waves have frequencies:

The phenomenon of bending of light around obstacles is called:

Infrasonic waves have frequencies:

In a transverse wave, particle motion is:

Which characteristic of sound is related to its frequency?

Waves that require a medium to travel are called:

The amplitude of a wave determines its:

The range of audible frequencies for a normal human ear is approximately:

A standing wave is formed by the superposition of: