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A transverse progressive wave is given b...

A transverse progressive wave is given by the equation `y = 2 cos pi (0.5 x - 200t)`, where x and y are in cm and 't' in second. The true following statement is

A

wavelength 2 cm and velocity 400 cm/s

B

wavelength 4 cm and amplitude 2 cm

C

wavelength 4 cm and frequency 100 Hz

D

b' and 'c'

Text Solution

Verified by Experts

The correct Answer is:
D

`A = 2 cm " " omega = 200pi`
`2pi n = 200 pi " " :. n = 100 Hz`
`K = 0.5pi`
`(2pi)/(lamda) = 0.5 pi " " :. lamda= 4 cm`
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