In the following questions, a statement of assertion is followed by...

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In the following
questions, a statement of assertion is followed by a corresponding statement of reason. Of the following statements, choose the correct one.
(a) Both Assertion and Reason are correct and Reason is the correct explanation of Assertion
(b) Both Assertion and Reason are correct but Reason is not the correct explanation of Assertion
- (c) Assertion is correct but Reason is incorrect
(d) Assertion is incorrect but Reason is correct
Assertion In photoelectric effect, cathode or emitter
- plate is usually coated with barium oxide, barium
- sulphide or strontium oxide.
Reason Coating prevents cathode from erosion.
\( \mathrm{P} \)
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