question_answer

A sonometer wire of length 1.5 m is made of steel. The tension in it produce an elastic strain of 1%. What is the fundamental frequency of steel if density and elasticity of steel are  and   respectively?                                                                                                         [JEE MAIN 2013]

A)  188.5 Hz                     

B)  178.2 Hz

C)  200.5 Hz         

D)       770 Hz

Correct Answer: B

Solution :

[b] Stress