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

$$ \int\left(\sin ^6 x+\cos ^6 x+3 \sin ^2 x \cos ^2 x\right) d x= $$

A

$-\frac{3}{2} \cos 2 x+C$

B

$\frac{2}{3} x+C$

C

$x+C$

D

$\frac{3}{2} \sin 2 x+C$

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

Uniform electric field of $5 \times 10^3 \mathrm{NC}^{-1}$ is maintained in the positive Y direction. Now a point charge of $2 \times 10^{-4} \mathrm{C}$ at rest is released from the origin. The kinetic energy attained by the charge when it is 5 m from the origin is:

A

10 J

B

5 J

C

50 J

D

25 J

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

Pick out the correct statement from the following;

A

The number density of free electrons in the valance band decides the strength of the electric current

B

Valance band is always completely filled, while conduction band is always partially filled

C

The maximum energy required to shift an electron from the conduction band to valance band is called energy band gap

D

In a semiconductor no free electrons are found in the conduction band at 0 K

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

Two neutral bodies of masses $m_1$ and $m_2$ are kept at a distance of $r \mathrm{~cm}$ from one another in a vacuum medium. A gravitational force Fracts between the two bodies. The entire set-up is then transferred, as it is, to a water medium. The force between the bodies is then $\mathrm{F}_{\mathrm{w}}$. The ratio of $F_v$ to $F_w$ is:

A

$4:3$

B

$1: 1$

C

$ 1:1.33$

D

$3: 2$