When a light wave is reflected from a mirror, there is a change in its
When a liquid is at its boiling point, no temperature change takes place due to heating. The energy supplied due to heating
When a metal is heated in a flame, the electrons absorb energy & jump to higher energy state. On coming back to the lower energy siate, they emit light, which we can observe in
When a moving bus stops suddenly, the passenger are pushed forward because of the
When a number of resistors are connected in series in a circuit, the value of current
When a pail of water is swung in a vertical circle, the water does not fall out at the top of the loop when the speed is
When a person sitting on a swing stands up on the swing, the frequency of oscillation
When a person walking in bright Sunlight enters a dark room, he is not able to see clearly for a little while as
When a person walking in bright sunlight enters a dark room, he is not able to see clearly for a little while because
When a piece of pure silicon is doped with aluminium then
