Light of two different frequencies whose photons have energies 1 eV and 2.5 eV, respectively, successively illuminate a metallic surface whose work function is 0.5 eV. Ratio of maximum speed of emitted electrons will be
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
For maximum speed of photoelectrons, 
Given, 
and 
…… (i)
For another photon, 
and 
…… (ii)
From equation (i) and (ii), we get
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