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Physics · 2021

JEE Main · 4 August 2021, Shift 2 · Q20

A student measured volume of a 3 dimensional body of height, length and breadth h, l and b respectively using three vernier callipers A, B and C. He…

A student measured volume of a $\displaystyle 3$ dimensional body of height, length and breadth $\displaystyle \mathrm{h}, \mathrm{l}$ and b respectively using three vernier callipers $\displaystyle \mathrm{A}, \mathrm{B}$ and C . He found the volumes to be $\displaystyle \mathrm{V}_{\mathrm{A}}, \mathrm{V}_{\mathrm{B}}, \mathrm{V}_{\mathrm{C}}$ respectively and forgot to apply the zero error correction The actual value of volume is $\displaystyle \mathrm{V}_0$. If $\displaystyle \mathrm{V}_{\mathrm{A}}>\mathrm{V}_0, \mathrm{~V}_{\mathrm{B}}-\mathrm{V}_{\mathrm{C}}$ is a positive value and $\displaystyle \mathrm{V}_{\mathrm{C}}<\mathrm{V}_0$, then what is not true about A, B and C.
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JEE Main 2021 Physics question, with the answer from NTA’s final answer key. Where our answers come from.