1
COMEDK 2026 Morning Shift
MCQ (Single Correct Answer)
+1
-0

A particle starts rotating from rest. The instantaneous angular displacement is $\theta=3 t^3-t^2$, where $\theta$ is in radian and $t$ in s; The angular velocity at $t=1 \mathrm{~s}$ is

A

$9 \mathrm{rads}^{-1}$

B

$7 \mathrm{rads}^{-1}$

C

$3 \mathrm{rads}^{-1}$

D

$1 \mathrm{rads}^{-1}$

2
COMEDK 2026 Morning Shift
MCQ (Single Correct Answer)
+1
-0

Point charge $\sqrt{2} C, \sqrt{2} C$, and $-2 C$ are placed at the three vertices of a right-angled triangle in air. [as shown in the figure below]

What is the electric field at a point $P$ on the hypotenuse that is equidistant from all three charges.

Given distances $X P=Y P=Z P=0.5 \mathrm{~m}$

COMEDK 2026 Morning Shift Physics - Electrostatics Question 7 English
A

$0 \cdot 72 \times 10^{10} N C^{-1} \quad$ along YP

B

$7.2 \times 10^{10} N C^{-1} \quad$ along PY

C

$0.72 \times 10^9 \mathrm{NC}^{-1} \quad$ along YP

D

$7.2 \times 10^9 \mathrm{NC}^{-1} \quad$ along PY

3
COMEDK 2026 Morning Shift
MCQ (Single Correct Answer)
+1
-0

A solenoid having resistance $R=60 \Omega$ and inductance $L=0.4 \mathrm{H}$ is connected to an AC source $V=100 \sqrt{2} \sin 200 t$.

Find the maximum current.

A

1.732 A

B

2.828 A

C

1.414 A

D

0.707 A

4
COMEDK 2026 Morning Shift
MCQ (Single Correct Answer)
+1
-0

A motor cyclist starts from the top of an inclined plane of height $h$ to go around a globe of death trap of radius $r$. The ratio of minimum height ' $h$ ' of the inclined plane to the radius ' $r$ ' of the death globe in order to go around the death globe successfully is

A

$5: 2$

B

$2: 5$

C

$7: 2$

D

$3: 2$