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

What is the expression for minimum angular momentum of electron in hydrogen atom?

An electron is accelerated through a potential difference of 100 volt. Calculate de-Broglie wavelength in nm.

Name the logic gate which generates high output when at least one input is high.

Calculate the minimum energy required to take an electron from the ground state to the first excited state in hydrogen atom.

State the formula for moment of inertia of solid sphere about an axis passing through its center.

State law of tension.

A solenoid of length 50 cm of the inner radius of 1 cm and is made up of 500 turns of copper wire for a current of 5 A in it. What will be the magnitude of the magnetic field inside the solenoid?

Why don’t heavy nuclei decay by emitting a single proton or a single neutron?

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.