Question

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: (a).Both A and R are true and R is correct explanation of A

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Q. 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...

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