| ASSERTION: A potentiometer of longer length is used for accurate measurement. |
| REASON: The potential gradient for a Potentiometer of longer length with a given source of e.m.f. becomes small. |
A) If both assertion and reason are true and reason is the correct explanation of assertion.
B) If both assertion and reason are true and reason is not the correct explanation of assertion.
C) If assertion is true but reason is false.
D) If both assertion and reason are false.
E) If assertion is false but reason is true.
Correct Answer: A
Solution :
Sensitivity \[\propto =\frac{1}{Potential\,gradient}\propto \left( Lenght\,of\,wire \right)\]
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