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Assertion: The semiconductor used for fa...

Assertion: The semiconductor used for fabrication of visible LEDs must at least have a band gap of 1.8 eV.
Reason: The spectral range of visible light is 0.4 eV to 1.8 eV

A

If both assertion and reason are true and reason is the correct explanation of assertion.

B

If both assertion and reason are true not but reason is not the correct explanation of assertion.

C

If assertion is true but reason is false

D

If both assertion and reason are false.

Text Solution

Verified by Experts

The correct Answer is:
C
The spectral range of visible light is from about 3 eV to 1.8 eV. Therefore the semiconductor used for fabrication of visible LEDs must at least have a band gap of 1.8 eV
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