Question

Frequency of wave is 5Hz,where wave length is 4m.then in how much time this wave travel 160m distance.
A) 6sec
B) 30sec
C) 20sec
D) 8sec​

Answer 1

Answer:

8 sec is the answer

Explanation:

frequency= speed /wavelength

so, frequency ×wavelength = speed

5×4 = speed

20 m/s = speed

Given, distance = 160m

time = distance/ speed

t= 160/20 = 8 sec

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