The stopping potential any material is 1.4Volt.What will its threshold wavelength if the value of incident radiation is 5.6 eV. . `[h = 6 .63 xx 10^(-34) Js, C= 3 xx 10^8 m//s, eV = 1.6 xx 10^(-19) J]`.

Find out the photoelectric threshold wavelength of copper. Given work function of copper = 4.52eV, h = 6.6 xx 10^(-34)J.s, 1 eV = 1.6 xx 10^(-19)J

Find the wavelength of an electron having kinetic energy 10 eV. (h = 6.33 xx 10^(-34) J.s, m_(e) = 9 xx 10^(-31) kg)

When radiation of wavelength 4940 Å is incident on a metal surface photoelectricity is generated. For a potential difference 0.6 V between cathode and anode, photocurrent stops. For another incident radiation, the stopping potential changes to 1.1V. Find work function of the metal and wavelength of the second radiation. (h = 6.6 xx 10^(-27) " erg".s, e = 1.6 xx 10^(-19) C)

Calculate the minimum wavelength of x-ray produced by on X-ray tube operating at 30KV [h = 6.6 xx 10^-34Js] .

By how much would the stopping potential for given photosensitive surface go up if the frequency of the incident radiations were to be increased from 4xx10^(15) Hz to 8xx10^(15)Hz ? Given h = 6.4xx10^(-34) J.s, e = 1.6xx10^(-19)C and c = 3xx10^(8) m.s^(-1) .

Calculate wavelength of a photon having energy 1.2 ev. (1 ev = 1.601 xx 10^(-19) Joule)

Calculate the energy of each quantum of an electromagnetic radiation of wavelength 5000 Å [h=6.626xx10^(-34)J*s ].

What will be the wavelength of oxygen molecule in picometers moving with a velocity of 660 ms^(-1) (h = 6.626 xx 10^(-34) kg m^2 s^(-1)) .

What is the de Broglie wavelength related to an electron of energy 100 eV ? (Given, mass of electron, m = 9.1 xx 10^(-31) kg, " " e = 1.6 xx 10^(-19) C and h = 6.63 xx 10^(-34) J.s )