Is the tension in a string on either side of a pulley the same throughout its length ?if yes,under what condition?

A sonometer wire is vibrating in resonance with a tuning fork.Keeping the tension applied same,the length of the wire is doubled.Under what conditions would the tuning fork still be in resonance with the wire?

In a certain arrangement a proton does not get deflected while passing through a magnetic field region. Under what conditions in this possible?

Draw the circuit diagram of Wheatstone bridge. Under what condtion, no current flows through its galvanometer (balanced condition)?

Fill ups: In a sheet of charge the same charge shows up on its ………………sides.

What is thw work done by tension nin the string of a simple pendulum?

A stone of mass 0.25 kg tied to the end of a string is whirled round in a circle of radius 1.5 m with a speed of 40 rev.//min in a horizontal plane. What is the tension in the string ? What is the maximum speed with which the stone can be whirled around if the string can withstand a maximum tension of 200 N ?

Three equal weights of mass 2 kg each are hangning os string passing over a fixed pulley as shown in fig.What is the tension in the string connectig weights B and C? .

Explain total internal reflection. What are its conditions?