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

A particle moves along a parabolic path $y=9 x^2$ in such a way that the x component of velocity remains constant. If, the acceleration of the particle is $2 j m s^{-2}$, find the x component of velocity.

A

$\frac{1}{9} m s^{-1}$

B

$\frac{1}{4} m s^{-1}$

C

$\frac{1}{3} m s^{-1}$

D

$\frac{1}{6} m s^{-1}$

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

A source of alternating emf $\varepsilon=\varepsilon_0 \sin (\omega t)$ is connected to a capacitor. Then the instantaneous current in the circuit is: ˋ

A

$ I=I_0 \sin \left(\omega t-\frac{\pi}{2}\right)$

B

$I=\sqrt{2} I_0 \sin \left(\omega t+\frac{\pi}{2}\right)$

C

$I=I_0 \sin \omega t$

D

$I=I_0 \sin \left(\omega t+\frac{\pi}{2}\right)$

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

If the intensity of the central maximum in the Young's double slit experiment is $\mathrm{I}_0$, what will be the intensity at the same region when one of the slits is blocked by an opaque object?

A

$\frac{I_0}{2}$

B

$I_0$

C

$\frac{I_0}{4}$

D

$\frac{I_0}{8}$

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

The dimensional formula for specific resistance is:

A

$\left[M L^3 T^3 A^2\right]$

B

$\left[M L^3 T^{-3} A^{-2}\right]$

C

$\left[M L^{-3} T^{-2} A^{-2}\right]$

D

$\left[M L^3 T^{-3} A^2\right]$