Question Bank [ 2022 ] — Physics STD 12 Science — Question

The relative velocity between two parallel layers of water is 8 cm/s and the perpendicular distance between them is 0.1 cm. Calculate the velocity gradient.

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 cut-off or stopping potential?

State the logical expression for NAND gate.

Find the radius of gyration of a uniform disc about an axis perpendicular to its plane and passing through its center.

A system releases 100 kJ of heat while 80 kJ of work is done on the system. Calculate the change in internal energy.

The half-life of a nuclear species is 1.386 years. Calculate its decay constant per year.

Which method of biasing is used for operating transistor as an amplifier?

Define capacitive reactance.