Q 11-01-080JEE MainJEE Main 2025 (24 Jan, Shift 1)Easy
For an experimental expression $y = \dfrac{32.3\times1125}{27.4}$, where all the digits are significant, then to report the value of $y$ we should write
Answer: (B) $y = 1330$
In multiplication and division the result keeps as many significant figures as the least precise factor. $32.3$ and $27.4$ have 3 significant figures (1125 has 4), so the answer needs 3.
$$y = \frac{32.3\times1125}{27.4} = 1326.19\ldots \approx 1.33\times10^3 = 1330$$
Solution by Sreeraj P, M.Sc Physics