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

A solenoid has core of a material with relative permeability 301 and its winding carries a current of 2 A . The number of turns of the solenoid is 600 per metre. The magnetization of the material is

A

$3.6 \times 10^{-5} \mathrm{~A} / \mathrm{m}$

B

$3.6 \times 10^5 \mathrm{~A} / \mathrm{m}$

C

$1.8 \times 10^{-5} \mathrm{~A} / \mathrm{m}$

D

$1.8 \times 10^5 \mathrm{~A} / \mathrm{m}$

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

Two points on a travelling wave having frequency 500 Hz and velocity $300 \mathrm{~m} / \mathrm{s}$ are $30^{\circ}$ out of phase, then the minimum distance between the two points is

A

0.02 m

B

0.01 m

C

0.05 m

D

0.1 m

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

The charges are arranged at the four corners of square $A B C D$ of side ' $d$ ' as shown in figure. The work required to put this arrangement together is given by

MHT CET (PCB) 2025 9th April Morning Shift Physics - Electrostatics Question 2 English
A

$\frac{-9 q^2}{4 \pi \varepsilon_0 d}$

B

$\frac{-7 q^2}{4 \pi \varepsilon_0 d}$

C

$\frac{-q^2}{4 \pi \varepsilon_0 d}[9-2 \sqrt{2}]$

D

$\frac{-q^2}{4 \pi \varepsilon_0 d}[9+2 \sqrt{2}]$

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

If current ' i ' is passing through the solenoid of diameter ' $d$ ' having number of turns per unit length ' $n$ ', then the inductance per unit length near the middle of a long solenoid is directly proportional to

A

d and n

B

$\mathrm{d}^2$ and n

C

d and $\mathrm{n}^2$

D

$\mathrm{d}^2$ and $\mathrm{n}^2$