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

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

____ frequency, is the minimum frequency required to eject an electron when photons hit the metal surface.

Find out the wavenumber, when an electron jumps from 2nd orbit to 1st.

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

Total number of nodes for 3d orbital is ____

The ultraviolet spectral region is obtained in Balmer series.

Gravitational force = Gm1m2/r2.