Assertion : Potassium and caesium are used in photoelectric cells.
Reason : Potassium and caesium emit electrons on exposure to light.
Reason : Potassium and caesium emit electrons on exposure to light.
- AIf both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
- BIf both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
- CIf the Assertion is correct but Reason is incorrect.
- DIf both the Assertion and Reason are incorrect.
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