1
TG EAPCET 2025 (Online) 2nd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

For an aperture of $5 \times 10^{-3} \mathrm{~m}$ and a monochromatic light of wavelength $\lambda$, the distance for which ray optics becomes a good approximation is 50 m , then $\lambda=$

A

$5000\mathop {\rm{A}}\limits^{\rm{o}}$

B

$6000 \mathop {\rm{A}}\limits^{\rm{o}}$

C

$5400 \mathop {\rm{A}}\limits^{\rm{o}}$

D

$6500 \mathop {\rm{A}}\limits^{\rm{o}}$

2
TG EAPCET 2025 (Online) 2nd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

An electron and a positron enter a uniform electric field $E$ perpendicular to it with equal speeds at the same time. The distance of separation between them in the direction of the field after a time ' $t$ ' is

( $\frac{e}{m}$ is specific charge of electron)

A

$\frac{2 E e t^2}{m}$

B

$\frac{E e t^2}{m}$

C

$\frac{E e t^2}{2 m}$

D

zero

3
TG EAPCET 2025 (Online) 2nd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

A charge $q$ is placed at the centre ' $O$ ' of a circle of radius $R$ and two other charges $q$ and $q$ are placed at the ends of the diameter $A B$ of the circle. The work done to move the charge at point $B$ along the circumference of the circle to a point $C$ as shown in the figure is

TG EAPCET 2025 (Online) 2nd May Evening Shift Physics - Electrostatics Question 34 English
A

$\frac{1}{4 \pi \varepsilon_0} \cdot \frac{q^2}{R}(\sqrt{2})$

B

zero

C

$\frac{1}{4 \pi \varepsilon_0} \cdot \frac{q^2}{R}\left(\frac{\sqrt{2}-1}{2}\right)$

D

$\frac{1}{4 \pi \varepsilon_0} \cdot \frac{q^2}{R}\left(\frac{1}{\sqrt{2}}\right)$

4
TG EAPCET 2025 (Online) 2nd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

In a potentiometer experiment, a wire of length 10 m and resistance $5 \Omega$ is connected to a cell of emf 2.2 V . If the potential difference between two points separated by a distance of 660 cm on potentiometer wire is 1.1 V , then the internal resistance of the cell is

A

$1.6 \Omega$

B

$1.4 \Omega$

C

$1.2 \Omega$

D

$1 \Omega$

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