The eye controls the amount of light reaching the retina by adjusting the

The carbon-granules microphone works on the principle of change in

A transistor is used in the amplification of signals because it

A current of 0.5 A flowing 3h Deposits 2g of metal during electrolysis. The quantity of the same metal that would be deposited by the currents of 1.5A flowin...

A bead traveling on a straight wire is brought to rest at 0.2m by friction. If the mass of the bead is 0.01kg and the coefficient of friction between the bea...

If the total force acting on a particle is zero, the linear momentum will

The colours seen on soap bubbles are due to

A bead travelling on a straight line wire is brought to rest at 0.2 by friction. If the mass of the bead is 0.01kg and the coefficient of friction between th...

At what frequency would a capacitor of 2.5μF Used in radio circuit have a resistance of 250Ω