Class 11th

Heat is supplied to an ideal monoatomic gas at constant pressure. The ratio of

Two capillary tube of radii 0.3 cm and 0.4 cm are dipped in the same liquid. The ratio of respective heights through which liquid will rise, is

A mass m attached to a spring oscillates with a time period 4 s. If the mass is increased by 1 kg, then period increases by 1 s. Its initial mass is

The equation y = acos²ωt + asin²ωt is

If the earth suddenly stop rotating, the value of ‘g’ at the equator would

A particle of mass m is moving in a plane along a circular path of radius r. Its angular momentum about the axis is L. The centripetal force acting on the particle is

We have two spheres, one of which is hollow and other is solid. They have identical mass and moment of inertia about its tangent. The ratio of their radii is given by

Two balls are thrown vertically upward simultaneously. While they are in air, the acceleration of their centre of mass

A uniform chain of length L and mass M is lying on a table and 1/4^th of its length is hanging vertically down over the edge of the table. If g is acceleration due to gravity, the work required to pull the hanging part back on the table

If a ball of mass 4 kg moving with velocity of 3 m/s collides elastically head on with another ball of mass 6 kg which is at rest, then the ratio of speed of second ball to first after collision will be