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dhawal kashyap Grade: 11
        when photons of energy 4.25ev strike at surface of a metal A, the ejected e- have maximum kinetic energy, Ta & de broglie wavelength lemda a  the  k max    of  e- emitted from other metal B by photons of energy 4.20ev is Tb = Ta - 1.50ev. If de broglie wavelength of these e- is lemda B = 2*lemda A  then which is not correct?

A; work function of A is 2.25ev
B; work function of B is 3.70ev
C; Ta=2ev
D; Tb=2.75ev
7 years ago

Answers : (2)

SAGAR SINGH - IIT DELHI
879 Points
										

Dear dhawal,


inorrect option is b)


?



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Askiitians Expert


Sagar Singh


B.Tech, IIT Delhi


7 years ago
Karan Madan
33 Points
										How (b) Pls Elaborate Please feel free to ask your queries here. We are all IITians and here to help you in your IIT JEE preparation.
										
one year ago
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