Verified Solution • 2025–26 Session moderate

QNEET-2023-Ph-255: NEET 2023 Physics - Class 11 NEET-2023-Ph-255 Solution: A metal wire has mass \((0.4 0.002)\ {g}\) radius \((0.3…

A metal wire has mass

(0.4\pm 0.002)\ \text{g}

radius

(0.3\pm 0.001)\ \text{mm}

and length

(5\pm 0.02)\ \text{cm}

. The maximum possible percentage error in the measurement of density will nearly be: 1.3% 1.6% 1.4% 1.2%

Step-by-Step Verified Solution

_ = M V _ = M � r 2 _ _ _ _ = _ M M + 2 _ r r + _ _ _ _ _ _ % = [ 0.002 0.4 + 2 ( 0.001 ) ( 0.3 ) + 0.02 5 ] _ 100 % = 1 2 % + 2 3 % + 2 5 % = 1.6 %