A monochromatic light of wavelength `lamda` is incident ofn plane reflecting surface. After reflection, its wavelength will be

A monochromatic light of wavelength lamda is incident on plane reflecting surface. After reflection, its wavelength will be

Light of wavelength 6000Å falls on a plane reflecting surface. The reflected wavelength is

Light of wavelength 6000 Å falls on a plane reflecting surface. The reflected wavelength is.

A monochromatic light of wavelength lamda is incident on an isolated metallic sphere of radius a. The threshold wavelength is lamda_(0) , which is larger than lamda . Find the number of photoelectrons emitted before the emission of photo electrons stops.

Stopping potential of emitted photo electron is V when monochromatic light of wavelength 'lamda' incident on a metal surface. If wavelength of light incident becomes 'lambda/3' stopping potential of photoelectrons becomes V/4 then the threshold wavelength of metal is k'lambda' then k will be

Stopping potential of emitted photo electron is V when monochromatic light of wavelength 'lamda' incident on a metal surface. If wavelength of light incident becomes 'lambda/3' stopping potential of photoelectrons becomes V/4 then the threshold wavelength of metal is k'lambda' then k will be

Monochromatic light of wavelength 589 nm is incident on a water surface from air the wavelength, frequency and speed of (a) reflected and