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TS EAMCET 2022 (Online) 18th July Morning Shift
MCQ (Single Correct Answer)
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TS EAMCET 2022 (Online) 18th July Morning Shift Physics - Ray Optics Question 15 English

A lens is made of glass having an index of refraction 1.5 . One side of the lens is flat and the other side is convex with a radius $R$. If an object is placed 60 cm , towards the convex side of the lens, the image is formed at

120 cm on the other side of the lens. The value of $R$ is

A

20 cm

B

$\frac{40}{3} \mathrm{~cm}$

C

33 cm

D

18 cm

2
TS EAMCET 2022 (Online) 18th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

A Young's double slit experiment apparatus has slits separated by 0.2 mm and a screen 60 cm away from the slits. The whole apparatus is immersed in a liquid medium of refractive index $11 / 9$ and the slits are illuminated with green light ( $\lambda=550$ nm in vacuum). Find the fringe width of the pattern formed on the screen.

A

0.95 mm

B

1.25 mm

C

1.35 mm

D

1.45 mm

3
TS EAMCET 2022 (Online) 18th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

An electron is released from a distance of 4 m from a stationary point charge 20 nC . What will be the speed of the electron, when it is

2 m away from the point charge?

(Charge of electron $=1.6 \times 10^{-19} \mathrm{C}$, mass of electron

$$ =9 \times 10^{-31} \mathrm{~kg}, \frac{1}{4 \pi \varepsilon_0}=9 \times 10^9 \text { SI unit) } $$

A

$2 \times 10^6 \mathrm{~m} / \mathrm{s}$

B

$4 \times 10^6 \mathrm{~m} / \mathrm{s}$

C

$16 \times 10^6 \mathrm{~m} / \mathrm{s}$

D

$2.4 \times 10^6 \mathrm{~m} / \mathrm{s}$

4
TS EAMCET 2022 (Online) 18th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

TS EAMCET 2022 (Online) 18th July Morning Shift Physics - Capacitor Question 7 English

The following figure shows a 9 V battery and 3 uncharged capacitors of capacitances $C_1=C_2=C_3=1 \mu \mathrm{~F}$. The switch is thrown to the right side until capacitor $C_1$ is fully charged, then the switch is thrown to the left. The final charge on capacitor $C_2$ is

A

$1 \mu \mathrm{C}$

B

$2 \mu \mathrm{C}$

C

$3 \mu \mathrm{C}$

D

$4 \mu \mathrm{C}$

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