1
AP EAPCET 2025 - 26th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

A narrow slit of width 2 mm is illuminated with a monochromatic light of wavelength 500 nm . If the distance between the slit and the screen is 1 m , then first minima are separated by a distance of

A

5 mm

B

0.5 mm

C

1 mm

D

10 mm

2
AP EAPCET 2025 - 26th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The force between two conducting spheres of same radius having charges $+8 \mu \mathrm{C}$ and $-4 \mu \mathrm{C}$ separated by some distance in air is $F$. If the spheres are connected by a conducting wire and after some time the wire is removed, then the magnitude of the force between the two conducting spheres is

A

$F$

B

$\frac{F}{2}$

C

$\frac{F}{8}$

D

$\frac{F}{4}$

3
AP EAPCET 2025 - 26th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

In space the electric potential varies as $V=20|\mathbf{r}|$ volt. where $\mathbf{r}=x \hat{\mathbf{i}}+y \hat{\mathbf{j}}+z \hat{\mathbf{k}}$ is the position vector. Then, electric field in $\left(\mathrm{NC}^{-1}\right)$ at the point $(4 \mathrm{~m}, 3 \mathrm{~m},-5 \mathrm{~m})$ is

A

$-\sqrt{2}(4 \hat{\mathbf{i}}+3 \hat{\mathbf{j}}-10 \hat{\mathbf{k}})$

B

$-\sqrt{2}(8 \hat{\mathbf{i}}+6 \hat{\mathbf{j}}-10 \hat{\mathbf{k}})$

C

$-(8 \hat{\mathbf{i}}+6 \hat{\mathbf{j}}-10 \hat{\mathbf{k}})$

D

$4 \hat{i}+3 \hat{j}-5 \hat{k}$

4
AP EAPCET 2025 - 26th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

A capacitor of capacitance $2 \mu \mathrm{~F}$ is charged with the help of a 60 V battery. After disconnecting the battery, if this capacitor is connected in parallel with another uncharged capacitor of capacitance $l \mu \mathrm{~F}$, then the potential difference across the plates of $2 \mu \mathrm{~F}$ capacitor is

A

30 V

B

60 V

C

40 V

D

20 V