Question

The Doppler effect is applicable for

• A. Light waves only
• B. Sound waves only
• C. Both light and sound waves
• D. None of the above

Answer 1

The correct option is C Both light and sound waves

Answer is C.
An apparent change in the frequency of waves, as of sound or light, occurring when the source and observer are in motion relative to each other, with the frequency increasing when the source and observer approach each other and decreasing when they move apart.
Hence, it is applicable for both sound and light waves.