Question:

A bat emits ultrasonic sound of frequency 200 kHz. If this sound meets a water surface then what will be the wavelength of reflected sound in air and transmitted sound in water respectively?

Options :

  • (a) 1.486 x 10^-2 m, 3.40 x 10^3 m
  • (b) 1.70 x 10^-3 m, 0.743 x 10^-2 m
  • (c) 1.486 m, 3.4 m
  • (d) 1.486 x 10^-2 m, 3.4 x 10^3 m^-3

Answer :

(b) 1.70 x 10-3 m, 0.743 x 10-2 m

Answer Steps :

step 1

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