The frequency of a water wave in a ripple tank is reduced by while the wave speed…

PHYSICS · Single correct · CBSE · Physics · Waves · Waves

Problem

The frequency of a water wave in a ripple tank is reduced by

20\%

while the wave speed remains the same. By what percentage does the wavelength change? (a) Decreases by

20\%

(b) Increases by

20\%

25\%

(d) Decreases by

25\%