When a resistance R is across a cell, the voltage across the terminals of the cell is reduced to two-third of its normal value. The internal resistance of t...

The figure above shows two waveforms X and Y. If the frequency of X is 30Hz what is the frequency of Y

In the figure above, what is the angle of reflection of the ray of light at mirror M?

E, F and G are yellow, red and cyan transparent light filters respectively. The color of a white opaque object when viewed through the arrangement of the fil...

The figure above shows displacement-time graphs for three different motions. which of the following statements is correct

A particle is injected perpendicularly into an electric field, it travels along a curved path as depicted in the image above,the particle is

In the circuit diagram above, the ammeter reads a current of 3A when R is 5 ohms and 6A when R is 6 ohms,the value of the unknown resistance X is

The figure above shows three different ways of hanging a heavy picture from a hook. the tension in the string will be

The wire X in the figure above is at right angles to the plane of the paper and carries a current into the paper. at which of the points labelled 1-4, will t...