Question

A large ripple tank with a vibrator working at a frequency of 30 Hz produces 25 complete waves in a distance of 50 cm. The velocity of the wave is
(a) 53 cm s-1
(b) 60 cm s-1
(c) 750 cm s-1
(d) 1500 cm s-1

please tell me the correct answer
Hurry​

Answer 1

Answer:

b)60 cm s^-1

frequency×wavelength= velocity

f=30

length of one wave=wavelength=50/25=2 cm

so velocity=30×2=60cms^-1