Ultra-violet light falls on a dry zinc plate.
1.Name the particles emitted from the plate.
2.What is the nature of charge acquired by the plate?
3.Name the phenomenon that takes place.
4.Name one of the devices based on the above phenomenon.
(a) What kind of energy change takes place when a magnet is moved towards a coil having a galvanometer between its ends ?
(b) Name the phenomenon.