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Assertion : A $p-n$ junction with reverse bias can be used as a photo-diode to measure light intensity.
Reason : In a reverse bias condition the current is small but it is more sensitive to change in intensity of incident light.
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Reason : In a reverse bias condition the current is small but it is more sensitive to change in intensity of incident light.
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If both assertion and reason are true and reason is the correct explanation of assertion.
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