Physics - Current Electricity Question with Solution | TestHub

A sphere of mass M is supported by a uniform light string (Mass per unit length $=\mu$ ) that passes over a light thin horizontal rod (not necessarily smooth) of length $L$. This rod is hinged about its left end and stays horizontal in equilibrium throughout the experiment and also in options $\mathrm{C},\mathrm{D}$ below. Given that the angle is $\theta$ and that $f_0$ represents the fundamental frequency of standing waves in the portion of the string above the rod. This frequency is excited using a tuning fork of frequency f . Initially $f_0$ is equal to f . Some changes are made to certain parameters in options C,D below to perform the experiment again. (M, g, θ, f, L are considered the parameters of the problem for the options below). Mark the CORRECT option(s).