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

Under which condition laws of Boyle, Charles, and Gay-Lussac are valid?

A body, tied to a string, performs circular motion in a vertical plane such that the tension in the string is zero at the highest point. What is the linear speed of the body at the

1. lowest position
2. highest position ?

Define uniform circular motion.

If friction is made zero for a road, can a vehicle move safely on this road?

What is the value of resistance for an ideal voltmeter?

An automobile engine develops \(62.84 kW\) while rotating at a speed of \(1200 rpm\). What torque does it deliver?

Calculate the value of the magnetic field at a distance of 2 cm from a very long straight wire carrying a current 5 A?

A disc of mass 4 kg rolls on a horizontal surface. If its linear speed is 3 m/s, what is its total kinetic energy?

A ring and a disc roll down an inclined plane through the same height. Compare their speeds at the bottom of the plane.

Give the truth table for NOR gate.