Alpha Question Bank for Medical: Physics>Chapter 30 - Ray Optics>Exercise-1>Q 100

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An equilateral prism is kept on a horizontal surface. A typical ray of light $P Q R S$ is shown in the figure. For minimum deviation

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Important Questions on Ray Optics

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Alpha Question Bank for Medical: Physics>Chapter 30 - Ray Optics>Exercise-1>Q 101

A prism has a refracting angle of

60 ° .

If it produces a minimum deviation of

30 °

in an incident ray, the angle of incidence is

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Alpha Question Bank for Medical: Physics>Chapter 30 - Ray Optics>Exercise-1>Q 102

A thin prism

P_{1}

with angle

4 °

and made from glass of refractive index

1.54

is combined with another prism

P_{2}

, made of glass of refractive index

1.72

to produce dispersion without deviation. The angle of prism

P_{2}

is

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Alpha Question Bank for Medical: Physics>Chapter 30 - Ray Optics>Exercise-1>Q 103

A prism has a refracting angle

60 ° .

A ray of given monochromatic light suffers minimum deviation of

38 °

in passing through prism refractive index of the material of the prism is: (

\sin 49 ° = 0.7547

)

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Alpha Question Bank for Medical: Physics>Chapter 30 - Ray Optics>Exercise-1>Q 104

An equilateral prism has

μ = \sqrt{3} .

Its angle of minimum deviation will be:

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Alpha Question Bank for Medical: Physics>Chapter 30 - Ray Optics>Exercise-1>Q 105

The deviation is maximum for which colour?

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Alpha Question Bank for Medical: Physics>Chapter 30 - Ray Optics>Exercise-1>Q 106

The refractive indices of violet and red light are

1.54

and

1.52

respectively. If the angle of the prism is

10 °,

the angular dispersion is

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Alpha Question Bank for Medical: Physics>Chapter 30 - Ray Optics>Exercise-1>Q 107

A microscope is focussed on a mark on a piece of paper and then a slab of glass of thickness

3 cm

and refractive index

1.5

is placed over the mark. How should the microscope be moved to get the mark in focus again?

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Alpha Question Bank for Medical: Physics>Chapter 30 - Ray Optics>Exercise-1>Q 108

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 the angles of minimum deviation for red light and blue light, respectively, in a prism of this glass. Then,