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

When an object is placed infront of a convex mirror at a distance ' $u$ ' from the pole of the mirror such that the size of the image is ' $n$ ' times that of the object. Then, the object distance ' $u=$

A

$\frac{f}{n^2}-n f$

B

$n f-\frac{f}{n}$

C

$f-\frac{f}{n}$

D

$f+\frac{f}{n^2}$

2
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

3
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

$\frac{F}{4}$

4
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

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