AIPMT | 2014Photoelectric EffectHard
Question
If the kinetic energy of the particle is increased to 16 times its previous value, the percentage change in the de-Broglie wavelength of the particle is
Options
A.25
B.75
C.60
D.50
Solution
λ = 
(∵ p = 
)
λ′ =
= 0.25 λ
% change = - 75%
(∵ p = )λ′ =
= 0.25 λ % change = - 75%
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