When a metal surface is illuminated by light of wavelengths 400 nm and 250 nm, the maximum velocities of the photoelectrons ejected are v and 2 v respectively. The work function of the metal is ( 
Planck's constant, 
velocity of light in air)
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
By using, 
……… .(i)
……… (ii)
On solving (i) and (ii)
…… ..(iii)
From equations (i) and (iii), 
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