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Question

A bat emits ultrasonic sound of frequency 100 kHz in air. If the sound gets reflected (without transmission and loss of energy) from a water surface then wavelength of the reflected sound is
[speed of sound in air is 340 ms1]

A
0.55×102 m
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B
0.34×102 m
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C
0.65×102 m
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D
0.74×102 m
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