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Assertion (A): In each sub question given below a statement (S) and explanation (E) is given. Choose the correct answers from the codes (a), (b), (c) and (d) given for each question:
\( \mathbf{S} \) is correct but \( \mathbf{E} \) is wrong
\( \mathbf{S} \) is wrong but \( \mathbf{E} \) is correct
Both \( \mathbf{S} \) and \( \mathbf{E} \) are correct and \( \mathbf{E} \) is correct explanation of \( \mathbf{S} \)
Both \( \mathbf{S} \) and \( \mathbf{E} \) are correct but \( \mathbf{E} \) is not correct explanation of \( \mathbf{S} \)
\( \mathbf{S}: \mathbf{K} \) and \( \mathrm{Cs} \) are used in photoelectric cells.
Reason (R): \( \mathbf{E}: \mathrm{K} \) and \( \mathrm{Cs} \) emit electrons on exposure to light.
(A) Both A and R are true and R is the correct explanation of A.br(B) Both A and R are true, but R is not the correct explanation of A.
(C) A is true, but R is false.
(D) A is false, but R is true.
(E) Both A and R are false.
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