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

The series limit for the frequency of Balmer series is ' $\mathrm{v}_{\mathrm{B}}$ ', then the series limit frequency of Paschen series ' $v_p$ ' is

A

$\quad \frac{2}{9} \mathrm{v}_{\mathrm{B}}$

B

$\quad \frac{9}{4} \mathrm{v}_{\mathrm{B}}$

C

$\frac{4}{9} \mathrm{v}_{\mathrm{B}}$

D

$\frac{2}{3} \mathrm{~V}_{\mathrm{B}}$

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

In Young's double slit experiment, the intensities at two points, for the path difference $\frac{\lambda}{4}$ and $\frac{\lambda}{3}$ are $\mathrm{I}_1$ and $\mathrm{I}_2$ respectively. If $\mathrm{I}_0$ denotes the intensity produced by each one of the individual slits then the ratio $\left(\mathrm{I}_1+\mathrm{I}_2\right): \mathrm{I}_0$ is $\left(\cos 45^{\circ}=1 / \sqrt{2}\right)\left(\cos 60^{\circ}=0.5\right)$

A

2

B

3

C

4

D

1

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

A system is compressed adiabatically, then its temperature

A

increases.

B

decreases.

C

becomes zero.

D

remains constant.

4
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

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