PART - 2 CH - 13 Oscillations — Physics STD 11 Science — Question

Is work done by a battery always equal to the thermal energy developed in electrical circuit? What happens if a capacitor is connected in the circuit?

If it were possible for a gas in a container to reach the temperature 0K, its pressure would be zero. Would the molecules not collide with the walls? Would they not transfer momentum to the walls?

A person can jump from 5 m height into water but can't jump 5 m height onto a hard floor without water. Why?

For an object rotating with angular velocity w. If the perpendicular distance of a particle from the axis of rotation is greater, then what will be its angular velocity?

The displacement-time graph for two particles X and Y are straight lines making angles of 30° and 60° with the time axis. What is the ratio of the velocities of Y and X?

Periodic rise and fall of intensity of sound when two sound waves moving in same direction, having same amplitude but differ in frequency by less than 10 is known as ________.

The total energy of a simple pendulum is E. What will be the kinetic energy and potential energy of the pendulum at the instant when the displacement of the pendulum is half of the amplitude?

A car travels at a speed of 60km/hr due north and the other at a speed of 60km/hr due east. Are the velocities equal? If no, which one is greater? If you find any of the questions irrelevant, explain.

State if the following statements is true or false. Give reasons for your answer: In an inelastic collision, the final kinetic energy is always less than the initial kinetic energy of the system.