Question

If the tension in sonometer wire is increased by 21%, compare the initial frequency with the later.

Answer 1

Frequency (f)

If tension increases by 21%, then,

T₂ ​= 1.21 T₁​

`f_2/f_1 = sqrt 1.21`

= 1.1

So, the frequency increases to 1.1 times, i.e., by 10%.