The value of acceleration due to gravity (g) at a distance of 2R from the surface of earth, where R is the radius of earth is ______.
1). g/3
2). g/4
3). g/9
4). g/2
2. Conversion of heat into electrical is achieved by using :
3. Rainbows are produced when sunlight.
4. What is the force of attraction between any two bodies by virtue of their masses is called?
6. The speed of sound travel fastest through
7. Speed of light is maximum in _____.
8. Vehicle tyres are inflated properly
9. Which phenomena shows the particle nature of light?
10. If the earth suddenly stop rotating, the value of "g" will be