A wave disturbance in a medium is described by y(x, t)=0.02 \cos (50 \pi t+\frac{\pi}{2}) \cos (10 \pi x) where x, y are in meters and t is in second. Which statement(s) is/are correct?

An antinode occurs at x=0.3 {\m}.

The speed of the wave is 4 {\m} \/ { \sec}.

The wavelength of the wave is 0.2 m .

WBJEE 2025 Physics and Chemistry Papers

Question : 77 of 80

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A wave disturbance in a medium is described by y(x,t)=0.02‌cos(50πt+‌

)‌cos(10πx) where x,y are in meters and t is in second. Which statement(s) is/are correct?

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