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Statement-1: Potassium and caesium are u...

Statement-1: Potassium and caesium are used in photo-electric cells.
Statement-2: Potassium and caesium emit electrons on exposure to light above certain minimum frequency.

A

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

B

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

C

If assertion is true but reason is false.

D

If the assertion and reason both are false.

Text Solution

Verified by Experts

The correct Answer is:
A
K and Cs emit electrons on exposure of light due to low ionisation potential.
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