The phenomenon of beats can take place
(a) for longitudinal waves only
(b) transverse waves only
(c) for both longitudinal and transverse waves
(d) for sound waves only.

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Solution

(c) for both longitudinal and transverse waves

When two or more waves of slightly different frequencies (v₁ – v₂ ≯ 10) travel with the same speed in the same direction, they superimpose to give beats. Thus, the waves may be longitudinal or transverse.

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