1
AP EAPCET 2024 - 22th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

When a convex lens is immersed in a liquid of refractive index equal to $80 \%$ of the refractive index of the material of the lens. The focal length of the lens increases by $100 \%$. The refractive index of the liquid is

A
1.27
B
1.2
C
1.33
D
1.4
2
AP EAPCET 2024 - 22th May Evening Shift
MCQ (Single Correct Answer)
+1
-0
The angle between the axes of a polariser and an analyser is $45^{\circ}$. If the intensity of the unpolarised light incident on the polariser is $I$, then the intensity of light emerged from the analyser is
A
21
B
$\frac{1}{2}$
C
1
D
$\frac{1}{4}$
3
AP EAPCET 2024 - 22th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The magnitude of an electric field which can just suspend a deuteron of mass $3.2 \times 10^{-27} \mathrm{~kg}$ freely in ari is

A
$19.6 \times 10^{-8} \mathrm{NC}^{-1}$
B
$196 \mathrm{NC}^{-1}$
C
$1.96 \times 10^{-10} \mathrm{NC}^{-1}$
D
$0.196 \mathrm{NC}^{-1}$
4
AP EAPCET 2024 - 22th May Evening Shift
MCQ (Single Correct Answer)
+1
-0
Two charges 5 nC and -2 nC are placed at points $( 5 cm\mathrm{~}$ $0,0)$ and $(23 \mathrm{~cm}, 0,0)$ in a region of space where there is no other external field. The electrostatic potential energy of this charge system is
A
$10 \times 10^{-7} \mathrm{~J}$
B
$5 \times 10^{-7} \mathrm{~J}$
C
$15 \times 10^{-7} \mathrm{~J}$
D
$25 \times 10^{-7} \mathrm{~J}$
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