If the length of a simple pendulum is 120cm, calculate its frequency [\(\pi\) = \(\frac{22}{7}\) g = 10ms\(^{-2}\)]

From the above graph, what is the distance covered in the last stage of the motion?

Assuming E\(_1\),  E\(_2\), and  E\(_3\), are equal, then the total e.m.f of the arrangement will be given by 

Given that SQ = 10cm and SR = 6cm, the refractive index of the block of glass shown in the above figure is

Water waves and light waves differ generally in their