

MCQOPTIONS
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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 | |