PHYSICS · Single correct · A Level · Physics · Waves · Waves
Problem
A sonometer wire of length 1.5 m is made of steel. The tension in it produces an elastic strain of 1%. What is the fundamental frequency of steel if density and elasticity of steel are 7.7×103 kg/m3 and 2.2×1011 N/m2 respectively?
(1) 188.5 Hz
(2) 178.2 Hz
(3) 200.5 Hz
(4) 770 Hz