1
MHT CET (PCB) 2025 9th April Evening Shift
MCQ (Single Correct Answer)
+1
-0

Magnetic field at the centre of a circular loop of area ' $A$ ' is ' $B$ '. The magnetic moment of the loop is ' $x B$ '. The value of ' $x$ ' is ( $\mu_0=$ permeability of vacuum or free space)

A

$\frac{\sqrt{A^3}}{\mu_0 \pi}$

B

$\frac{2 \sqrt{A}}{\mu_0 \pi}$

C

$\frac{2}{\mu_0} \sqrt{\frac{\mathrm{~A}^3}{\pi}}$

D

$\frac{2}{\mu_0} \sqrt{\frac{\mathrm{~A}}{\pi}}$

2
MHT CET (PCB) 2025 9th April Evening Shift
MCQ (Single Correct Answer)
+1
-0

An ideal gas in a container of volume 500 cc is at a pressure of $2 \times 10^5 \mathrm{~N} / \mathrm{m}^2$. The average kinetic energy of each molecule is $6 \times 10^{-21} \mathrm{~J}$. The number of gas molecules in the container is

A

$5 \times 10^{25}$

B

$5 \times 10^{23}$

C

$25 \times 10^{23}$

D

$2.5 \times 10^{22}$

3
MHT CET (PCB) 2025 9th April Evening Shift
MCQ (Single Correct Answer)
+1
-0

Out of the following graphs, the correct graphical relation for LC parallel resonant circuit at resonance is

MHT CET (PCB) 2025 9th April Evening Shift Physics - Alternating Current Question 1 English
A

D

B

C

C

B

D

A

4
MHT CET (PCB) 2025 9th April Evening Shift
MCQ (Single Correct Answer)
+1
-0

A small steel ball of mass ' M ', radius ' R ' and density ' $\rho$ ' falls with terminal velocity through a tube filled with glycerine of density ' $\sigma$ '. The viscous force acting on the steel ball is ( $\mathrm{g}=$ acceleration due to gravity)

A

$\mathrm{Mg} \frac{\rho}{\sigma}$

B

$\mathrm{Mg}(\mathrm{Q}-\sigma)$

C

$\mathrm{Mg} \rho \sigma$

D

$M g\left(1-\frac{\sigma}{\rho}\right)$