Waves & Oscillations PYQ — Page 15

A tuning fork arrangement (pair) produces 4 beats / sec with one fork of frequency $288 \mathrm{cps}$. A little wax is placed on the unknown fork and it then produces 2 beats /sec. The frequency of the unknown fork is

A wave $y=a \sin (\omega t-k x)$ on a string meets with another wave producing a node at $x=0$. Then the equation of the unknown wave is

In a simple harmonic oscillator, at the mean position

When temperature increases, the frequency of a tuning fork