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

In the spectrum of hydrogen atom the ratio of the longest wavelength in the Balmer series to the longest wavelength in the Lyman series is

A

$\frac{9}{4}$

B

$\frac{4}{9}$

C

$\frac{27}{5}$

D

$\frac{5}{27}$

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

A spherical liquid drop of radius R is divided into 64 equal droplets. If surface tension is $T$ then the work done in this process will be

A

$8 \pi R^2 T$

B

$\quad 12 \pi R^2 T$

C

$4 \pi R^2 T$

D

$\quad 16 \pi R^2 T$

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

A lens of power +5 D is put in contact with a lens of power -3 D . The combination will behave like a

A

convergent lens of focal length 75 cm .

B

divergent lens of focal length 16 cm .

C

convergent lens of focal length 50 cm .

D

divergent lens of focal length 40 cm .

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

A glass capillary of radius 0.35 mm is inclined at $60^{\circ}$ with the vertical in water. The length of water column in the capillary tube is (surface tension of water $=7 \times 10^{-2} \mathrm{Nm}^{-1}$, acceleration due to gravity $=10 \mathrm{~m} / \mathrm{s}^2, \cos 0^{\circ}=1$, $\cos 60^{\circ}=0.5$, density of water $=1 \mathrm{gram} / \mathrm{cm}^3$ )

A

16 cm

B

4 cm

C

8 cm

D

0.8 cm