Physics Test 16...

If the ratio of specific heat of a gas at constant pressure to that at constant volume is, the change in internal energy of a mass of gas, when the volume changes from V to 2V at constant pressure P, is

The temperature of the mixture of one mole of helium and one mole of hydrogen is increased from 0°C to 100°C at constant pressure. The amount of heat delivered will be

In the figure shown, the spring is light and has a force constant k. The pulley is light and smooth and the string is light. The suspended block has a mass m. On giving a slight displacement vartically to the block in the downward direction from its equilibrium position the block executes S.H.M. on being released with time period T. Then

Two points are located at a distance of 10 m and 15 m from the source of oscillation. The period of oscillation is 0.05 sec and the velocity of the wave is 300 m/sec. What is the phase difference between the oscillations of two points?

An oil drop of radius r and density r is held stationary in a uniform vertically upwards electric field 'E'. is the density of air and e is quanta of charge, then the drop has-

Two thin wire rings each having a radius R are placed at a distance d apart with their axes coinciding. The charges on the two rings are +q and –q. The potential difference between the centres of the two rings is

The electric resistance of a certain wire of iron is R. If its length and radius are both doubled, then

A particle of mass m and charge q, accelerated by potential difference V enters a region of uniform transverse magnetic field B. If d is the thickness of region of magnetic field, then the deviation of the particle from initial direction when it leaves the field is

Which of the following is not correct about relative magnetic permeability ()?

A boat is moving due east in a region where the earth's magnetic field is due north and horizontal. The boat carries a vertical aerial 2m long. If the speed of the boat is  the magnitude of the induced emf in the wire of aerial is: