The threshold wavelength of lithium is `8000 A^(0)` When light of a wavelength `9000 A^(0)` is made to be incident on it, then the photo electrons

The threshold wavelength for certain metal is lambda _(0) . When a light of wavelength (lambda_(0))//(2) is incident on it , the mximum velocity of photelectrons is 10^(6) m//s . If the wavelength of the incident radiation is reduced to (lambda _(0) // (5) , then the maximum velocity of the photoelectrons in m//s will be ,

The threshold wavelength for lithium is 5250 Å. For photoemission to take place, the wavelength of the incident light must be

The threshold wavelength for lithium is 5250 Å. For photoemission to take place, the wavelength of the incident light must be

When the light of wavelength of 4000Å is made incident on a disc then it covers 2HPZ .if the light of wavelength 8000Å is made incident on it then the number of HPZ covered it will be -

The work function of a metal is 1.5 eV, light of wavelength 6600 overset@A is made incident on it. The maximum k.e. of emitted photo - electron is:

The threshold wavelength of a metal is ( lambda_0). Light of wavelength slightly less than lambda_0 is incident on an insulated plate made of this metal. It is found that photoelectrons are emitted for sometimes and after that the emission stops. Explain.

The threshold wavelength of a metal is ( lambda_0). Light of wavelength slightly less than lambda_0 is incident on an insulated plate made of this metal. It is found that photoelectrons are emitted for sometimes and after that the emission stops. Explain.

The threshold wavelength of a metal is ( lambda_0). Light of wavelength slightly less than lambda_0 is incident on an insulated plate made of this metal. It is found that photoelectrons are emitted for sometimes and after that the emission stops. Explain.