Questions
An LED is constructed from a PN junction based on a certain semi-conducting material whose energy gap is 4 eV. Then the wavelength of the emitted light is
detailed solution
Correct option is D
Eg=hcλ⇒λ=12400EgÅTalk to our academic expert!
Similar Questions
A light emitting diode (LED) has a voltage drop of 2 V across it and passes a current of 10 mA. When it operates with a 6 V battery through a limiting resistor R, the value of .R is
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