The wavelength which is generated from microwave oven is 1 cm. In this case find the energy of microwave photon. `(h=6.63xx10^-34J-s)`

In a microwave over the electromagnetic waves are generated having wavelength of the order of 1 cm. Find the energy of the microwave photon. (h = 6.33 xx 10^(-34) J.s) .

Hydrogen atoms in the ground state are excited by means of radiation of wavelength 1026 Å. Find out the wavelength of radiation that this excited atoms can emit when they come back to ground state. Given, h=6.625xx10^(-34)J*s,c=3xx10^(8)m*s^(-1), 1 eV =1.6xx10^(-19)J ionisation energy of hydrogen = 13.62 eV.

The de Broglie wavelength associated with a moving particle changes from 0.2Å to 0.4Å . Determine the change in momentum of the particle. (h = 6.63xx10^(-34) J.s) .

The wavelength associated with a moving particle of mass 0.1 mg is 3.3xx10^(-29) m. find its velocity [h=6.6xx10^(-34)kg*m^(2)*s^(-1)] .

For any metal the photoelectric threshold wavelength is 3800overset@A . An ultraviolet wave of wavelength 2000overset@A is incident on the metal then what will be- the maxinum kinetic energy of the photoelectrons. [given— h = 6.62 xx 10^(-34)J.S]

When ultraviolet rays of wavelength 620 Å is incident on a hydrogen atom in the ground state, its electron is emitted with a velocity of 1.5 xx10^(6) m *s^(-1) . What is the ionisation energy of hydrogen ? Given , h= 6.625xx10^(-34)J *s , mass of electron = 9.1 xx 10^(-31)kg, c=3xx 10^(8)m*s^(-1) and 1 eV=1.6xx 10^(-19)J .

A photon of energy 8eV is incident on a metal plate with threshold frequency 1.6 xx 10^(15) Hz. The maximum kinetic energy of the emitted photo electrons is (given h= 6 xx 10^(-34) Js )

The maximum velocities of the photoelectrons ejected are v and 2v for incident light of wavelength 400 nm and 250 nm on a metal surface respectively. Calculate the work function of the metal. Given h = 6.63 xx 10^(-34)J.s and c = 3 xx 10^(8) m.s^(-1)

Estimate the kinetic energy of electron that hit the target in a Coolidge tube and produce X-ray of wavelength 1 Å . Given h=6.62xx10^(-34)J *s,c=3xx10^(8)m*s^(-1) .

Energy of electron is given by E=-2.178xx10^(-18)((Z^(2))/(n^(2))) J. Wavelength of light required to excited an electron in an hydrogen atom from level n=1 to n=2 will be (h=6.62xx10^(-34)J*s and c=3.0xx10^(8)m*s^(-1)) -