Electronic Devices and Circuits
Silicon is not suitable for fabrication of light emitting diodes because it is

Direct band gap semiconductor
Wideband gap semiconductor
Narrowband gap semiconductor
An indirect band gap semiconductor

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Electronic Devices and Circuits
Assertion (A): A p-n junction has high resistance in reverse direction.Reason (R): When a reverse bias is applied to p-n junction, the width of depletion layer increases.

A is false but R is true
A is true but R is false
Both A and R are true and R is correct explanation of A
Both A and R are true but R is not a correct explanation of A

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