AIEEE 2007 | Geometrical Optics Question 184 | Physics

The refractive index of a glass is $$1.520$$ for red light and $$1.525$$ for blue light. Let $${D_1}$$ and $${D_2}$$ be angles of minimum deviation for red and blue light respectively in a prism of this glass. Then,

$${D_1} < {D_2}$$

$${D_1} = {D_2}$$

$${D_1}$$ can be less than or greater than $${D_2}$$ depending upon the angle of prism

$${D_1} > {D_2}$$

AIEEE 2005

MCQ (Single Correct Answer)

-1

A fish looking up through the water sees the outside world contained in a circular horizon. If the refractive index of water is $${4 \over 3}$$ and the fish is $$12$$ $$cm$$ below the surface, the radius of this circle in $$cm$$ is

$${{36} \over {\sqrt 7 }}$$

$${36\sqrt 7 }$$

$${4\sqrt 5 }$$

$${36\sqrt 5 }$$

AIEEE 2005

MCQ (Single Correct Answer)

-1

A thin glass (refractive index $$1.5$$) lens has optical power of $$-5$$ $$D$$ in air. Its optical power in a liquid medium with refractive index $$1.6$$ will be

$$-1$$ $$D$$

$$1$$ $$D$$

$$-25$$ $$D$$

$$25$$ $$D$$

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