Knockout JEE Main April 2021 (One Month)
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Personalized AI Tutor and Adaptive Time Table, Self Study Material, Weekend Live Classes, Mentorship from our Experts, Unlimited Mock Tests and Personalized Analysis Reports, 24x7 Doubt Chat Support,.
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(a)
is the energy of a photon of wavelength
. Where, h is the plank's constant and c is the speed of light in vacuum.
equating the values in the given equation:-
The correct answer is
and
, Since the bandgap of diode D2 is less than the energy of the photon
(b) As it is easier to observe the change in current with the change in light intensity in reverse bias.