Rain drops fall from great height. Which among the following statements is true regarding it?
1). they fall with that ultimate velocity which are different for different droplets
2). they fall with same ultimate velocity
3). their velocity increases and they fall With different velocity on the earth
4). their velocity increases and they fall with same velocity of the earth
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1. What is the unit of the physical quantity 'Stress'?
2. the density of gas is maximum at
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4. In which form is the supplied heat energy stored during change in temperature of substance?
5. In a nuclear reactor, one of the following is used as a fuel.
7. UK It is difficult to cook rice
8. Optical fibre works on which of the following principle of light?