If the kinetic energy of an electron is 5J. Find out its wavelength.

A ball of mass 0.5kg is moving with velocity 6.626 m/s. What’s the wavelength of that ball?

What is the wavenumber of violet color?

The energy of a hydrogen atom is positive.

When an electron jumps from 3rd orbit to 2nd orbit, which series of spectral lines are obtained?

Thomson discovered that every substance in this universe is made up of ____ from his experiments.

What is the ratio of the atomic radius of the 5th orbit in chlorine atom and 3rd orbit in Helium atom?

Mass of a photon is given by 3.313 x 10-34 kg. Find it’s wavelength.