Question

The distance between the 3rd crest and 10th crest is approximately 18 m as observed by a fisher ma
The wave length of such wave is:
(A) 2.57 m
(B) 3 m
(C) 3.5 m
(D) 2.6 m​

Answer 1

Answer:

The wavelength of the wave is 2.57 meters.

Explanation:

wavelength of a wave is defined as the distance between two successive crest.

Hence From third crest to tenth crest, distance  = (10-3)λ = 7λ

given that the distance between third crest and tenth crest is approximately 18m

=> 7λ = 18

=> λ = 18/7 = 2.57 m

Hence the wavelength of the wave is 2.57 meters.

Answer 2

Answer:

option a is the right answer