question_answer

A transverse wave is represented by

For what value of the wavelength the wave velocity is twice the maximum particle velocity? [JEE ONLINE 09-04-2014]

A)  40 cm   

B)                   20 cm     

C)  10 cm             

D)       60 cm

Correct Answer: A

Solution :

[a] Given, amplitude a = 10 cm wave velocity = 2 × maximum particle velocity i.e., or,