The work function of a metal is 3.45 eV. Calculate what should be the maximum wave length of a photon that can eject photo - electron from the metal.

The work function of a metallic surface is 2.5 eV. Ultraviolet light of wavelength 2000Å is allowed to be incident on the metallic surface. Calculate Stopping potential. (Given Planck's constant h = 6.63 xx 10^(-34) J-s , electronic charge e = 1.6 xx 10^(-19) C, electron mass m = 9.1 xx 10^( -31) kg

How does the maximum K.E. of electron emitted vary with work function of the metal?

The electron in the hydrogen atom pases from n= 4 to n = 1 level. What is the maximum number of photon that can be emited?

Work function of nickel is 5.01 eV. When ultraviolet radiation of wavelength 200 Å is incident on it, electrons are emitted. What will be the maximum velocity of emitted electrons?

What do you mean by breaking stress? The breaking stress for a metal is 7.8xx10^9 Nm^-2.Calculate the maximum length of the wire made of this metal which may be suspended without breaking. The density of the metal =7.8xx10^3 kg m^-3,g=10ms^-\2'.

There are mainly three ways to eject an electron from the surface of metals. What are those?