1
MHT CET 2024 10th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Two point charges $\mathrm{q}_1=6 \mu \mathrm{C}$ and $\mathrm{q}_2=4 \mu \mathrm{C}$ are kept at points $A$ and $B$ in air where $A B=10 \mathrm{~cm}$. What is the increase in potential energy of the system when $\mathrm{q}_2$ is moved towards $\mathrm{q}_1$ by 2 cm ?

$$\left(\frac{1}{4 \pi \varepsilon_0}=9 \times 10^9 \text { SI units }\right)$$

A
0.27 J
B
0.54 J
C
0.81 J
D
54 J
2
MHT CET 2024 10th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Two point charges $(A$ and $B)+4 q$ and $-4 q$ are placed along a line separated by a distance I '. Force acting between them is F. If $25 \%$ of charge from point $A$ is transferred to that at point B , the force between the charges now becomes

A
$\frac{3}{4} \mathrm{~F}$
B
$\frac{4}{3} \mathrm{~F}$
C
$\frac{9}{16} \mathrm{~F}$
D
$\frac{16}{9} \mathrm{~F}$
3
MHT CET 2024 10th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The electric potential at a point on the axis of an electric dipole is proportional to [r = distance between centre of the electric dipole and the point]

A
$\frac{1}{\mathrm{r}}$
B
$\frac{1}{r^2}$
C
$r$
D
$\frac{1}{\mathrm{r}^3}$
4
MHT CET 2024 10th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Four electric charges $+\mathrm{q},+\mathrm{q},-\mathrm{q}$ and -q are placed in order at the corners of a square of side 2 L. The electric potential at point midway between the two positive charges is

A
$\frac{1}{4 \pi \mathrm{E}_0} \frac{2 \mathrm{q}}{\mathrm{L}}\left(1+\frac{1}{\sqrt{5}}\right)$
B
$\frac{1}{4 \pi \mathrm{E}_0} \frac{2 \mathrm{q}}{L}\left(1-\frac{1}{\sqrt{5}}\right)$
C
$\frac{1}{4 \pi \mathrm{E}_0} \frac{2 \mathrm{q}}{\mathrm{L}}(1-\sqrt{5})$
D
$\frac{1}{4 \pi \mathrm{E}_0} \frac{2 \mathrm{q}}{\mathrm{L}}(1+\sqrt{5})$
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