1
JEE Main 2025 (Online) 8th April Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

A quantity Q is formulated as $X^{-2}Y^{+\frac{3}{2}}Z^{-\frac{2}{5}}$. X, Y, and Z are independent parameters which have fractional errors of 0.1, 0.2, and 0.5, respectively in measurement. The maximum fractional error of Q is

A

0.6

B

0.8

C

0.7

D

0.1

2
JEE Main 2025 (Online) 8th April Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

For a nucleus of mass number A and radius R, the mass density of nucleus can be represented as

A

$A^{\frac{2}{3}}$

B

Independent of A

C

$A^3$

D

$A^{\frac{1}{3}}$

3
JEE Main 2025 (Online) 8th April Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Figure shows a current carrying square loop ABCD of edge length is ‘a’ lying in a plane. If the resistance of the ABC part is r and that of ADC part is 2r, then the magnitude of the resultant magnetic field at centre of the square loop is

JEE Main 2025 (Online) 8th April Evening Shift Physics - Magnetic Effect of Current Question 10 English
A

$\frac{2\mu_0 I}{3\pi a}$

B

$\frac{\sqrt{2}\mu_0 I}{3\pi a}$

C

$\frac{3\pi\mu_0 I}{\sqrt{2}a}$

D

$\frac{\mu_0 I}{2\pi a}$

4
JEE Main 2025 (Online) 8th April Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The output voltage in the following circuit is (Consider ideal diode case)

JEE Main 2025 (Online) 8th April Evening Shift Physics - Semiconductor Question 9 English
A

0 V

B

+5 V

C

−5 V

D

10 V

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