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Question
If the speed of a wave is 340 m/s and its frequency is 1700 Hz, then λ for this wave in cm will be :
(a) 2
(b) 0.2
(c) 20
(d) 200
If the speed of a wave is 340 m/s and its frequency is 1700 Hz, then λ for this wave in cm will be :
(a) 2
(b) 0.2
(c) 20
(d) 200
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Solution
Wavelength = velocity / frequency
= 340 / 1700
= 1/5
= 0.2 m
option b is correct
Wavelength = velocity / frequency
= 340 / 1700
= 1/5
= 0.2 m
option b is correct
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