First slide

Introduction to waves

Question

The distance between two consecutive crests in a wave train produced in a string is 5 cm. If 2 complete waves pass through any point per second, the velocity of the wave is

Easy

A

10 cm/sec
B

2.5 cm/sec
C

5 cm/sec
D

15 cm/sec

Solution

$v = nλ = 2 \times 5 = 10 cm / \sec$

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