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qUESTIONS

A gas at 27°C temperature and 30 atmospheric pressure is allowed to expand to the atmospheric pressure. If the volume becomes 10 times its initial volume, then the final temperature becomes

The equation of state for 5 g of oxygen at a pressure P and temperature T, when occupying a volume V, will be

A cylinder containing an ideal gas is in vertical position and has a piston of mass M that is able to move up or down without friction (figure). If the temperature is increased

The force of gravitation is

The value of g on the earth’s surface is 980 cm/sec^2. Its value at a height of 64 km from the earth’s surface is

If the value of ‘g’ acceleration due to gravity, at earth surface is 10 m/s^2, its value in m/s^2 at the centre of the earth, which is assumed to be a sphere of radius ‘R’ metre and uniform mass density is

Two bodies of masses m1 and m2 are initially at rest at infinite distance apart. They are then allowed to move towards each other under mutual gravitational attraction. Their relative velocity of approach at a separation distance r between them is

Given mass of the moon is 1/81 of the mass of the earth and corresponding radius is 1/4 of the earth. If escape velocity on the earth surface is 11.2 km/s, the value of same on the surface of the moon is

The velocity with which a projectile must be fired so that it escapes earth’s gravitation does not depend on

The escape velocity from the earth is about 11 km/second. The escape velocity from a planet having twice the radius and the same mean density as the earth, is

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