COMEDK 2023 Evening Shift | Ray Optics Question 15 | Physics

When angle of incidence on one face of the equilateral glass prism is $$3 / 4^{\text {th }}$$ of the angle of prism, the ray of light undergoes minimum deviation. If the velocity of light in vacuum is '$$c$$' then the velocity of light in the glass is :

$$\frac{c^2}{\sqrt{2}}$$

$$\frac{3 c}{4}$$$

$$\sqrt{2} c$$

$$\frac{c}{\sqrt{2}}$$

COMEDK 2023 Evening Shift

MCQ (Single Correct Answer)

-0

A person has a normal near point $$25 \mathrm{~cm}$$. What is the magnifying power of the simple microscope he used, if the focal length of the convex lens used is $$10 \mathrm{~cm}$$ and the final image is formed at the least distance of distinct vision?

3.5

2.5

COMEDK 2023 Evening Shift

MCQ (Single Correct Answer)

-0

A lens of power $$+1 \mathrm{D}$$ is made in contact with another lens of power $$-2 \mathrm{D}$$ the combination will then act as a:

diverging lens of focal length $$100 \mathrm{~cm}$$

diverging lens of focal length $$33.3 \mathrm{~cm}$$

converging lens of focal length $$33.3 \mathrm{~cm}$$

Converging lens of focal length $$100 \mathrm{~cm}$$

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