Assertion (A) : When current through a bulb decreases by 0.5 % , the glow of bulb decreases by 1 %
Reason (R) : Glow (power) which is directly proportional to square of current

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A is incorrect and R is correct

A is correct and R is incorrect

Both A and R correct and R is the correct explanation of A

Both A and R correct but R is not the correct explanation of A

answer is A.

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Detailed Solution

Both A and R correct and R is the correct explanation of A.

Glow (power) is directly proportional to square of current. That is why glow of bulb decreases by 1% when current through the bulb decreases by 0.5%.

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