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

• A. 10 cm/sec
• B. 2.5 cm/sec
• C. 5 cm/sec
• D. 15 cm/sec

Answer 1

Answer: (A)

10 cm/sec

Answer 2

$v = n\lambda = 2 \times 5 = 10$cm/sec