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What was the outcome of the 1971 elections for the Congress party?

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Important Questions on Ray Optics and Optical Instruments

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Physics>Optics>Ray Optics and Optical Instruments>Refraction Through a Prism

The best quality optical fibres are made of :

MEDIUM

Physics>Optics>Ray Optics and Optical Instruments>Refraction Through a Prism

A prism has a refracting angle of

60^{o} .

When placed in the position of minimum deviation, it produces a deviation of

30^{o} .

The angle of incidence is

MEDIUM

Physics>Optics>Ray Optics and Optical Instruments>Refraction Through a Prism

The figure shows a ray of light falling normally on the face AB of an equilateral glass prism having a refractive index $3 / 2$ , placed in water of refractive index $4 / 3$ . Will this ray suffer total internal reflection on striking the face AC? Justify your answer.

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EASY

Physics>Optics>Ray Optics and Optical Instruments>Refraction Through a Prism

The polarising angle for transparent medium is

θ

v

is the speed of light in that medium. Then the relation between

θ

and

v

is (

c

= velocity of light in air)

EASY

Physics>Optics>Ray Optics and Optical Instruments>Refraction Through a Prism

The graph between angle of deviation

(δ)

and angle of incidence

(i)

for a triangular prism is represented by :

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Physics>Optics>Ray Optics and Optical Instruments>Refraction Through a Prism

What is an ideal solution?

MEDIUM

Physics>Optics>Ray Optics and Optical Instruments>Refraction Through a Prism

Under what conditions is the phenomenon of total internal reflection of light observed? Obtain the relation between the critical angle of incidence and the refractive index of the medium.

EASY

Physics>Optics>Ray Optics and Optical Instruments>Refraction Through a Prism

If the light is polarized by reflection, then the angle between reflected and refracted light is

HARD

Physics>Optics>Ray Optics and Optical Instruments>Refraction Through a Prism

An equilateral glass prism has a refractive index

1.6

in the air. Calculate the angle of minimum deviation of the prism, when kept in a medium of refractive index

\frac{4 \sqrt{2}}{5}

MEDIUM

Physics>Optics>Ray Optics and Optical Instruments>Refraction Through a Prism

A ray of light on passing through an equilateral glass prism, suffers a minimum deviation equal to the angle of the prism. The value of refractive index of the material of the prism is _____.

EASY

Physics>Optics>Ray Optics and Optical Instruments>Refraction Through a Prism

Unpolarized light of intensity

I

passes through an ideal polariser

A

. Another identical polariser

B

is placed behind

A

. The intensity of light beyond B is found to be

\frac{I}{2}

. Now another identical polariser

C

is placed between

A

and

B

. The intensity beyond B is now found to be

\frac{I}{8}

. The angle between polariser

A

and

C

HARD

Physics>Optics>Ray Optics and Optical Instruments>Refraction Through a Prism

A small angled prism of

4 °

deviates a ray through

2.48 °

. Find the refractive Index of the prism.

EASY

Physics>Optics>Ray Optics and Optical Instruments>Refraction Through a Prism

When an unpolarized light of intensity

I_{0}

is incident on a polarizing sheet, the intensity of light which does not get transmitted is

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Physics>Optics>Ray Optics and Optical Instruments>Refraction Through a Prism

The mixture that forms maximum boiling azeotrope is

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Physics>Optics>Ray Optics and Optical Instruments>Refraction Through a Prism

Show using a proper diagram how unpolarized light can be linearly polarised by reflection from a transparent glass surface.

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Physics>Optics>Ray Optics and Optical Instruments>Refraction Through a Prism

For a glass prism, the angle of minimum deviation will be smallest for the light of

EASY

Physics>Optics>Ray Optics and Optical Instruments>Refraction Through a Prism

The angle of incidence for a ray of light at a refracting surface of a prism is

45^{o}

. The angle of prism is

60^{o}

. If the ray suffers minimum deviation through the prism, the angle of minimum deviation and refractive index of the material of the prism respectively, are:

EASY

Physics>Optics>Ray Optics and Optical Instruments>Refraction Through a Prism

A thin prism having refracting angle

10^{o}

is made of glass of refractive index 1.42. This prism is combined with another thin prism made of glass of refractive index 1.7. This combination produces dispersion without deviation. The refracting angle of second prism should be

EASY

Physics>Optics>Ray Optics and Optical Instruments>Refraction Through a Prism

A ray of light is incident at an angle of incidence i, on one face of a prism of angle A (assumed to be small) and emerges normally from the opposite face. If the refractive index of the prism is μ, the angle of incidence i, is nearly equal to

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Physics>Optics>Ray Optics and Optical Instruments>Refraction Through a Prism

Angle of minimum deviation for a prism of refractive index 1.5 is equal to the angle of the prism. The angle of the prism is

(g i v e n \cos 41 ° - 24^{'} - 36^{''} = 0.75)

What was the outcome of the 1971 elections for the Congress party?

Important Questions on Ray Optics and Optical Instruments

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