Q. The distance between two consecutive crests in a wave train produced in a string in $5\ cm.$ 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) $15\ cm/sec$
Explanation
(a) $v = n\lambda = 2 \times 5 = 10\ cm/sec$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.