1
COMEDK 2025 Evening Shift
MCQ (Single Correct Answer)
+1
-0
In to a vessel containing pure water a clean glass tube of radius $3.6 \times 10^{-4} \mathrm{~m}$ is held vertically with 12 cm of the tube above the water level. Now the capillary tube is moved down in to the water so that only 2 cm of its length is above the water surface. Angle of contact $\Theta$ at this position is (given surface tension of water $=7.2 \times 10^{-2} \mathrm{Nm}^{-1}$ and $g=10 \mathrm{~ms}^{-2}$ )
A
$\Theta=45^{\circ}$
B
$\Theta=30^{\circ}$
C
$\Theta=15^0$
D
$\Theta=60^{\circ}$
2
COMEDK 2025 Evening Shift
MCQ (Single Correct Answer)
+1
-0
A point marked on a ring of radius 2 cm is in contact with a horizontal plane. Now the ring is rolled forward half a revolution along the positive X - direction. Then the angle made by the displacement vector of the point with the X - axis is:
A
$\theta=\boldsymbol{\operatorname { t a n }}^{-\mathbf{1}}\left(\frac{\mathbf{2}}{\mathbf{3} \boldsymbol{\pi}}\right)$
B
$\boldsymbol{\theta}=\boldsymbol{\operatorname { t a n }}^{-\mathbf{1}}\left(\frac{\mathbf{2}}{\boldsymbol{\pi}}\right)$
C
$\theta=\tan ^{-1}\left(\frac{2 \pi}{3}\right)$
D
$\theta=\cot ^{-1}\left(\frac{2}{\pi}\right)$
3
COMEDK 2025 Evening Shift
MCQ (Single Correct Answer)
+1
-0
The instantaneous values of alternating current and voltages in a circuit are $\mathrm{I}=\frac{3}{\sqrt{2}} \sin (200 \pi t)$ ampere and $\mathrm{V}=\frac{3}{\sqrt{2}} \sin \left(200 \pi t+\frac{\pi}{6}\right)$ volt. What is the average power consumed in the circuit in watt ?
A
$\frac{\sqrt{3}}{8}$
B
$\frac{6 \sqrt{3}}{8}$
C
$\frac{8 \sqrt{2}}{9}$
D
$\frac{9 \sqrt{3}}{8}$
4
COMEDK 2025 Evening Shift
MCQ (Single Correct Answer)
+1
-0
The velocity - mass graph of body with constant linear momentum is represented by the graph:
A
COMEDK 2025 Evening Shift Physics - Center of Mass and Collision Question 1 English Option 1
B
COMEDK 2025 Evening Shift Physics - Center of Mass and Collision Question 1 English Option 2
C
COMEDK 2025 Evening Shift Physics - Center of Mass and Collision Question 1 English Option 3
D
COMEDK 2025 Evening Shift Physics - Center of Mass and Collision Question 1 English Option 4
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