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[" 1077.A sound wave of wavelength "90cm...

[" 1077.A sound wave of wavelength "90cm" in glass is refracted "],[" into air.If the velocity of sound in glass is "5400m/sec,],[" the wavelength of the wave in air is: "],[[" (A) "55cm," (B) "5.5cm],[" (C) "55m," (D) "5.5m]]

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