Rotational Dynamics — Physics STD 12 Science — Question

When two objects are said to be in thermal equilibrium?

Calculate the moment of inertia of a uniform disc of mass \(10 kg\) and radius \(60 cm\) about an axis perpendicular to its length and passing through its centre.

The capacity of a parallel plate capacitor is 10 μF when the distance between its plates is 9 cm. What will be its capacity if the distance between the plates is reduced by 6 cm.

Two bodies have their moments of inertia I and 2I respectively about their axis of rotation. If their kinetic energies of rotation are equal, then what is the ratio of their angular velocity.

What is the resistance of an ideal voltmeter?

A simple pendulum moves from one end to the other in ¼ second. What is its frequency?

Is it always possible to see photoelectric effect with red light?

What are beats?

A wave is represented by an equation y = A Sin(Bx + Ct). Given that the constants A, B, and C are positive, can you tell in which direction the wave is moving?

State the logical expression for NAND gate.