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qUESTIONS

A player caught a cricket ball of mass 150 gm moving at the rate of 20 m/sec. If the catching process be completed in 0.1sec the force of the blow exerted by the ball on the hands of player is

A ball of mass 0.2 kg is thrown vertically upwards by applying a force by hand. If the hand moves 0.2 m while applying the force and the ball goes upto 2 m height further, find the magnitude of the force.

Two fixed frictionless inclined planes making an angle 30° and 60° with the vertical are shown in the figure. Two blocks A and B are placed on the two planes. What is the relative vertical acceleration of A with respect to B

Two particles of mass m each are tied at the ends of a light string of length 2a. The whole system is kept on a frictionless horizontal surface with the string held tight so that each mass is at a distance ‘a’ from the center P (as shown in the figure). Now, the mid-point of the string is pulled vertically upwards with a small but constant force F. As a result, the particles move towards each other on the surface. The magnitude of acceleration, when the separation between them becomes 2x, is

Volume versus temperature graphs for a given mass of an ideal gas is shown in figure. At two different values of constant pressure. What can be inferred about relation between P1 and p2

An inflated rubber balloon contains one mole of an ideal gas, has a pressure p, volume V and temperature 1. If the temperature rises to 1.1T, and the volume is increased to1.05 V, the final pressure will be

At 0°C the density of a fixed mass of a gas divided by pressure is x. At 100°C, the ratio will be

A flask is filled with 13 g of an ideal gas at 27°C and its temperature is raised to 52°C. The mass of the gas that has to be released to maintain the temperature of the gas in the flask at 52°C and the pressure remaining the same is

The r.m.s. speed of the molecules of a gas at a pressure 10^5Pa and temperature 0°C is 0.5 km sec^-1. If the pressure is kept constant but temperature is raised to 819°C, the velocity will become

When temperature of an ideal gas is increased from 27°C to 227°C, its r.m.s. speed changed from 400 metre/s to Vs .The Vs is

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