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

At what angle should the two forces $2 \overrightarrow{\mathrm{P}}$ and $\sqrt{2} \overrightarrow{\mathrm{P}}$ act so that the resultant force is $\sqrt{10} \overrightarrow{\mathrm{P}}$ ?

A

$\cos ^{-1}\left(\frac{1}{\sqrt{2}}\right)$

B

$\cos ^{-1}\left(\frac{1}{2}\right)$

C

$\cos ^{-1}\left(\frac{\sqrt{3}}{2}\right)$

D

$\cos ^{-1}\left(\frac{1}{\sqrt{3}}\right)$

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

If the r.m.s. velocity of gas is V at temperature T , then

A

$\mathrm{VT}^2=$ constant

B

$\mathrm{V}^2 \mathrm{~T}=$ constant

C

$\mathrm{V}^2 / \mathrm{T}=$ constant

D

$\quad \mathrm{VT}=$ constant

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

Light propagates 2 cm distance in glass of refractive index 1.5 in certain time. In the same time same light propogates a distance of 2.25 cm in a medium. The refractive index of the medium is

A

$\frac{4}{3}$

B

$\frac{3}{2}$

C

$\frac{8}{3}$

D

$\frac{3}{4}$

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

In photoelectric effect experiment, the stopping potential for a given metal is $\mathrm{V}_0$ (in volt) when radiation of wavelength $\lambda_0$ is used. If radiation of wavelength $5 \lambda_0$ is used with the same metal, then the stopping potential is (in volt) ( $\mathrm{h}=$ Planck's constant, $\mathrm{c}=$ velocity of light, $\mathrm{e}=$ electronic charge)

A

$\quad \mathrm{V}_0-\frac{4 \mathrm{hc}}{5 \mathrm{e} \lambda_0}$

B

$\quad \mathrm{V}_0+\frac{4 \mathrm{hc}}{5 \mathrm{e} \lambda_0}$

C

$\mathrm{V}_0+\frac{2 \mathrm{hc}}{3 \mathrm{e} \lambda_0}$

D

$\quad \mathrm{V}_0-\frac{2 \mathrm{hc}}{3 \mathrm{e} \lambda_0}$