Transformer is a device to convert
1). D.C. to A.C.
2). Low voltage D.C. into high voltage D.C.
3). Low voltage A.C. into high voltage A.C.
4). Mechanical energy into Electrical energy
1. Colours of thin films are due to?
2. Heat transfer horizontally within the atmosphere Is called
3. Light beam which is highly directional is called:
4. Which one of the following is a good electrical conductor?
5. The velocity of falling rain drops attains a terminal value because of
6. Pieces of camphor placed on water move about rapidly. This is because of
8. Which of the following statements is TRUE when we see rainbow
9. Prime Minister's 'Ujjwala Yojana' is related to __________________