For a photosenstive surface, threshold wavelength is `lambda_0`. Does photoemission occur if the wavelength `(lambda)` of the incident radiation is (i) more than `lambda_0` (ii) less than `lambda_0`? Justify your answer.

For a photosensitive surface, threshold wavelength is lamda_(0) . Does photoemission occur, if the wavelength (lamda) of the incident radiation is (a) more than lamda_(0) (b) less than lamda_(0) ? Justify your answer.

Thereshold wavelength for sodium is 6 xx 10^(-7) m . Then photoemission occurs for light of wavelength lambda if

Thereshold wavelength for sodium is 6 xx 10^(-7) m . Then photoemission occurs for light of wavelength lambda if

If lambda_(0) is the threshold wavelnegth of a metal and lambda is the wavelength of the incident radiation, the maximum velocity of the ejected electron from the metal would be

Electrons of mass m with de - Broglie wavelength , lambda fall on the target in an X-ray tube . The cutoff wavelength (lambda_0) of the emitted X-ray is:

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 ,

A metal has a work function phi_(0) and its corresponding threshold wavelength is lambda_(0) . If the threshold wavelength for a metal whose work function is (phi_(0))/(3) is n lambda_(0) , then what is the value of n ?

A metal has a work function phi_(0) and its corresponding threshold wavelength is lambda_(0) . If the threshold wavelength for a metal whose work function is (phi_(0))/(3) is n lambda_(0) , then what is the value of n ?