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

A uniform metal wire has length ' $L$ ', mass ' $M$ ' and area of cross-section ' A '. It is under tension ' $T$ ' and ' $V$ ' is the speed of transverse wave along the wire. The density of the wire is

A

$\quad \mathrm{TV}^2 \mathrm{~A}$

B

$\frac{\mathrm{T}}{\mathrm{V}^2 \mathrm{~A}}$

C

$\frac{\mathrm{A}}{\mathrm{TV}^2}$

D

$\frac{\mathrm{V}^2}{\mathrm{AT}}$

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

The main difference in the working of a step-up transformer and CE amplifier is

A

the transformer decreases the power whereas the amplifier keeps the power constant.

B

the transformer increases the power whereas the amplifier decreases the power.

C

the amplifier increases the power but the transformer can not increase the power.

D

the amplifier decreases the power but the transformer keeps the power constant.

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

A particle of mass 0.02 kg executes S.H.M. about $\mathrm{x}=0$ under the influence of a force as shown in figure. The period of S.H.M. is

MHT CET (PCB) 2025 9th April Evening Shift Physics - Simple Harmonic Motion Question 1 English
A

$\frac{\pi}{5} \mathrm{~s}$

B

$\frac{\pi}{10} \mathrm{~s}$

C

$\pi \mathrm{s}$

D

$\frac{\pi}{20} \mathrm{~s}$

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

The current $I$ is flowing through a loop $A B C D A$ as shown in the figure. The magnitude of the magnetic field at the centre ' $O$ ' is $x$ times

$$ \left(\frac{\mu_0 \mathrm{I}}{\mathrm{R}}\right)\left(\mathrm{OD}=\mathrm{R}, \mathrm{DC}=\mathrm{R}, \angle \mathrm{AOD}=90^{\circ}\right) $$

The value of ' $x$ ' is ( $\mu_0=$ permeability of free space)

MHT CET (PCB) 2025 9th April Evening Shift Physics - Moving Charges and Magnetism Question 1 English
A

$\frac{5}{16}$

B

$\frac{5}{12}$

C

$\frac{7}{16}$

D

$\frac{7}{12}$