JEE Main 2025 (Online) 29th January Morning Shift | Units & Measurements Question 4 | Physics

List - I	List - II
(A) Angular Impulse	(I) M⁰ L² T^-2
(B) Latent Heat	(II) M L² T^-3 A^-1
(C) Electrical resistivity	(III) M L² T^-1
(D) Electromotive force	(IV) M L³ T^-3 A^-2

Choose the correct answer from the options given below:

(A)-(II), (B)-(I), (C)-(IV), (D)-(III)

(A)-(I), (B)-(III), (C)-(IV), (D)-(II)

(A)-(III), (B)-(I), (C)-(IV), (D)-(II)

(A)-(III), (B)-(I), (C)-(II), (D)-(IV)

JEE Main 2025 (Online) 24th January Morning Shift

MCQ (Single Correct Answer)

-1

For an experimental expression $y=\frac{32.3 \times 1125}{27.4}$, where all the digits are significant. Then to report the value of $y$ we should write

$y=1326.186$

$y=1326.2$

$y=1326.19$

$y=1330$

JEE Main 2025 (Online) 23rd January Evening Shift

MCQ (Single Correct Answer)

-1

The energy of a system is given as $\mathrm{E}(\mathrm{t})=\alpha^3 \mathrm{e}^{-\beta t}$, where t is the time and $\beta=0.3 \mathrm{~s}^{-1}$. The errors in the measurement of $\alpha$ and $t$ are $1.2 \%$ and $1.6 \%$, respectively. At $t=5 \mathrm{~s}$, maximum percentage error in the energy is :

$6 \%$

$11.6 \%$

$4 \%$

$8.4 \%$

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