1
TG EAPCET 2024 (Online) 10th May Evening Shift
MCQ (Single Correct Answer)
+1
-0
A source at rest emits sound waves of frequency 102 Hz . Two observers are moving away from the source of sound in opposite directions each with a speed of $10 \%$ of the speed of sound. The ratio of the frequencies of sound heard by the observes is
A
$9: 11$
B
$1: 1$
C
$7: 9$
D
$2: 3$
2
TG EAPCET 2024 (Online) 10th May Evening Shift
MCQ (Single Correct Answer)
+1
-0
The power of a thin convex lens placed in air is +4 D . The refractive index of the material of the convex lens is $\frac{3}{2}$. If this convex lens is immersed in a liquid of refractive index $\frac{5}{3}$, then
A
it behaves like a convex lens of focal length 75 cm .
B
it behaves like a convex lens of focal length 125 cm .
C
it behaves like a concave lens of focal length 125 cm .
D
it behaves like a concave lens of focal length 75 cm .
3
TG EAPCET 2024 (Online) 10th May Evening Shift
MCQ (Single Correct Answer)
+1
-0
The refractive index of the material of a small angled prism is 1.6. If the angle of minimum deviation is $4.2^{\circ}$, the angle of the prism is
A
$4.2^{\circ}$
B
$7^{\circ}$
C
$4.8^{\circ}$
D
$9^{\circ}$
4
TG EAPCET 2024 (Online) 10th May Evening Shift
MCQ (Single Correct Answer)
+1
-0
The Brewster angle for air to glass transition of light is (Refractive index of glass $=15$ )
A
$\sin ^{-1}\left(\frac{3}{2}\right)$
B
$\cos ^{-1}\left(\frac{3}{2}\right)$
C
$\tan ^{-1}\left(\frac{3}{2}\right)$
D
$\cos ^{-1}\left(\frac{2}{3}\right)$
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