1
AP EAPCET 2021 - 19th August Evening Shift
MCQ (Single Correct Answer)
+1
-0

Match the following.

Column I Column II
(A) Transverse wave through a steel rod 1. $$\sqrt{B+\left(\frac{4}{3}\right)\frac{\eta}{\rho}}$$
(B) Longitudinal waves in Earth's crust 2. $$\sqrt{\frac{\eta}{\rho}}$$
(C) Longitudinal waves through a steel rod 3. $$\sqrt{\frac{2\pi T}{\rho \lambda}}$$
(D) Ripples 4. $$\sqrt{\frac{\lambda}{\rho}}$$

A
A - 2, B - 1, C - 4, D - 3
B
A - 1, B - 3, C - 4, D - 2
C
A - 3, B - 4, C - 1, D - 2
D
A - 2, B - 4, C - 1, D - 3
2
AP EAPCET 2021 - 19th August Evening Shift
MCQ (Single Correct Answer)
+1
-0

Light of wavelength $$300 \mathrm{~nm}$$ in medium $$A$$ enters into medium $$B$$ through a plane surface. If the frequency of light is $$5 \times 10^{14} \mathrm{~Hz}$$ and the ratio of speed in medium $$A$$ to that in medium $$B$$ is $$4 / 5$$, the absolute refractive index of medium $$B$$ is

A
1.6
B
1.5
C
1.3
D
1.45
3
AP EAPCET 2021 - 19th August Evening Shift
MCQ (Single Correct Answer)
+1
-0

In Young’s double slit experiment, the separation between the slits is halved and the distance between the screen is doubled. The fringe width is

A
unchanged
B
halved
C
doubled
D
quadrupled
4
AP EAPCET 2021 - 19th August Evening Shift
MCQ (Single Correct Answer)
+1
-0

Gauss's law helps in

A
determination of electric force between point charges
B
situation where Coulomb's law fails
C
determination of electric field due to symmetric charge distributions
D
determining electric potential due to symmetric charge distributions
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