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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > Assertion : Potassium and caesium are used in photo-electric cells. Reason : Potassium and caesium emit electrons on exposure to light.

Assertion : Potassium and caesium are used in photo-electric cells. Reason : Potassium and caesium emit electrons on exposure to light.

Assertion : Potassium and caesium are used in photo-electric cells. Reason : Potassium and caesium emit electrons on exposure to light.