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

If the root mean square (rms) speed of nitrogen molecules at room temperature is $100 \mathrm{~m} / \mathrm{s}$, then the rms speed of helium molecule at the same temperature is

A

$100 \sqrt{7} \mathrm{~m} / \mathrm{s}$

B

$350 \mathrm{~m} / \mathrm{s}$

C

$50 \sqrt{14} \mathrm{~m} / \mathrm{s}$

D

$100 \mathrm{~m} / \mathrm{s}$

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

Two waves of amplitudes $A_1$ and $A_2$ respectively, are superimposed. The ratio between the maximum and minimum intensities of the resultant waves is $9: 4$.

The value of $\frac{A_2}{A_1}$ is (assume $A_1>A_2$ )

A

0.66

B

0.20

C

0.75

D

0.44

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

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

4
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

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