A photon of wavelength `0.1 A` is emitted by a helium atom as a consequence of the emission of photon. The KE gained by helium atom is

A photon of wavelength 250 nm, absorbed by a substance was subsequently emitted as two photons. The first photon had a wavelength of 600 nm. What was the wavelength of the second photon?

An atom absorbs a photon of wavelength 500nm and emits another photon of wavelength 700nm. Find the net energy absorbed by the atom in the process.

An atom absorbs a photon of wavelength 500nm and emits another photon of wavelength 700nm. Find the net energy absorbed by the atom in the process.

An atom absorbs a photon of wavelength 500nm and emits another photon of wavelength 700nm. Find the net energy absorbed by the atom in the process.

The wavelength of the photon emitted by a hydrogen atom when an electron makes a transition from n = 2 to n = 1 state is :

A photon of energy 10.2 eV corresponds to light of wavelength lamda_(0) . Due to an electron transition from n=2 to n=1 in a hydrogen atom, light of wavelength lamda is emitted. If we take into account the recoil of the atom when the photon is emitted.

A photon of energy 10.2 eV corresponds to light of wavelength lamda_(0) . Due to an electron transition from n=2 to n=1 in a hydrogen atom, light of wavelength lamda is emitted. If we take into account the recoil of the atom when the photon is emitted.

Monochromatic light of wavelength 632.8 nm is produced by a helium-neon laser. The power emitted is 9.42 mW. How fast does a hydrogen atom have to travel in order to have the same momentum as that of the photon?

Monochromatic light of wavelength 632.8 nm is produced by a helium-neon laser. The power emitted is 9.42 mW. How fast does a hydrogen atom have to travel in order to have to have the same momentum as that of the photon ?