?Electricity is produced through dry cell from
1). Chemical energy
2). Thermal energy?
3). Mechanical energy
4). Nuclear energy
2. Which of the following features of a tunnel diode is its drawback?
3. A parachute descends slowly whereas a stone dropped from the same Height falls rapidly because
4. Which one among the following is not an electromagnetic wave?
5. Atmospheric pressure exerted on earth is due to
6. Newtons first law of motion gives the concept of
7. The wave like properties of electrons are useful in
9. When the milk is churned vigorously the cream from it is separated out due to