Assertion (A): Oxide coated cathodes are very commonly used.Reason (R): Work function of oxide coated cathode is 1 eV whereas it is 4.5 eV for pure tungsten.

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Assertion (A):  Oxide coated cathodes are very commonly used.Reason (R):  Work function of oxide coated cathode is 1 eV whereas it is 4.5 eV for pure tungsten.

TuteeHUB · Accepted Answer

Both A and R are true but R is not a correct explanation of A

TuteeHUB · Answer

Both A and R are true and R is correct explanation of A

TuteeHUB · Answer

A is true but R is false

TuteeHUB · Answer

A is false but R is true

1.	Assertion (A): Oxide coated cathodes are very commonly used.Reason (R): Work function of oxide coated cathode is 1 eV whereas it is 4.5 eV for pure tungsten.
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 a correct explanation of A
C.	A is true but R is false
D.	A is false but R is true
Answer» B. Both A and R are true but R is not a correct explanation of A

Assertion (A): Oxide coated cathodes are very commonly used.Reason (R): Work function of oxide coated cathode is 1 eV whereas it is 4.5 eV for pure tungsten.

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