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Sahay Sir > Question Answers > Cengage NEET by C.P Singh > Part 1 > Chapter 17 - Sound Waves > A thin plane membrane separates hydrogen at 7 degree C from hydrogen at 47 degree C, both being at the same pressure. If a collimated sound beam travelling from the cooler gas makes an angle of incidence of 30 degree at the membrane, the angle of refraction is

A thin plane membrane separates hydrogen at 7 degree C from hydrogen at 47 degree C, both being at the same pressure. If a collimated sound beam travelling from the cooler gas makes an angle of incidence of 30 degree at the membrane, the angle of refraction is

A thin plane membrane separates hydrogen at 7 degree C from hydrogen at 47 degree C both being at the same pressure. If a collimated sound beam travelling from the cooler gas makes an angle of incidence of 30 degree at the membrane the angle of refraction is