Question

1) The distance between two consecutive crests in a wave train produced in a string is 5 cm If two complete waves pass through any point per second, the velocity of wave is.

(1) 10 cm/sec
(2) 2.5 cm /sec
(3) 5 cm/sec
(4) 15 cm/sec

Answer 1

v = nl = 2 * 5 = 10 cm / sec

 

Wave Speed -

It is distance traveled by the wave in unit time.

- wherein

It is denoted by V

Answer 2

Dear Student,

● Answer - (1)

v = 10 cm/s

◆ Explanation -

# Given -

λ = 5 cm

f = 2 waves/s

# Solution -

Velocity of the wave is given as -

v = λ.f

Substitute values,

v = 5 × 2

v = 10 cm/s

v = 0.1 m/s

Hence, velocity of the wave produced on the string is 10 cm/s.

Thanks dear. Hope this is helpful to you...