1.

A plane progressive wave is represented by the equation \[y=0.1\sin \left( 200\pi t-\frac{20\pi x}{17} \right)\] where y is displacement in m, t in second and x is distance from a fixed origin in meter. The frequency, wavelength and speed of the wave respectively are                                                       [Pb. PET 2001]

A.            100 Hz, 1.7 m, 170 m/s     
B.            150 Hz, 2.4 m, 200 m/s
C.            80 Hz, 1.1 m, 90 m/s          
D.            120 Hz, 1.25 m, 207 m/s
Answer» B.            150 Hz, 2.4 m, 200 m/s


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