1.

Assertion (A): In a CRT, grid is kept at negative potential with respect to cathode.Reason (R): The function of grid in an electronic tube is to control the number of electrons.

A. Both A and R are true and R is correct explanation of A
B. Both A and R are true but R is not correct explanation of A
C. A is true R is false
D. A is false R is true
Answer» B. Both A and R are true but R is not correct explanation of A


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