A plane sound wave travelling in air is incident on a plane water surface

PHYSICS · Single correct · CBSE · Physics · Wave Optics · Wave Optics

Problem

A plane sound wave travelling in air is incident on a plane water surface. The angle of incidence is 60∘60^\circ. If the speeds of sound in air and water are 330 m s−1330\,\text{m s}^{-1} and 1400 m s−11400\,\text{m s}^{-1} respectively, then the wave undergoes (1) Refraction only (2) Reflection only (3) Both reflection and refraction (4) Neither reflection nor refraction

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