Physics Test 17...

Calculate the work done when 1 mole of a perfect gas is compressed adiabatically. The initial pressure and volume of the gas are and 6 L respectively. The final volume of the gas is 2 L. Molar specific heat of the gas at constant volume is 3R/2. [Given  6.19]

Three perfect gases at absolute temperatures  are mixed. The masses of molecules are m₁, m₂ and m₃ and the number of molecules are  respectively. Assuming no loss of energy, the final temperature of the mixture is

A coin is placed on a horizontal platform which undergoes vertical simple harmonic motion of angular frequency ω. The amplitude of oscillation is gradually increased. The coin will leave contact with the platform for the first time

Two small similar metal spheres A and B having charges 4q and – 4q, when placed at a certain distance apart, exert an electric force F on each other. When another identical uncharged sphere C, first touched with A then with B and then removed to infinity, the force of interaction between A and B for the same separation will be

A capacitor of 2F is charged as shown in the diagram.

When the switch S is turned to position 2, the percentage of its stored energy dissipated is

If current flowing in a conductor changes by 1% then power consumed will change by

A particle of charge q and mass m moves in a circular orbit of radius r with angular speed w . The ratio of the magnitude of its magnetic moment to that of its angular momentum depends on

Two short bar magnets P and Q are arranged such that their centres are on the X-axis and are separated by a large distance. The magnetic axes of P and Q are along X and Y axes respectively. At a point R, midway between their centres, if B is the magnitude of induction due to Q, the magnitude of total induction at R due to the both magnets is

The magnetic flux through a circuit of resistance R changes by an amount in a time t. Then the total quantity of electric charge Q that passes any point in the circuit during the time t is represented by