A ray of light wavelength λ 0 and frequency v 0 enters a glass slab of refractive index μ from air. Then,

Δ λ = λ 0 1 μ - 1 and Δ v ⁡ = 0

Its wavelength increases, frequency decreases

Its wavelength increases, frequency remains same

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The path followed by the I light beam in K, L and M transparent medium with refractive indices $μ_{k}, μ_{L} a n d μ_{m}$ is as in the figure given below.

So, what is the relationship between the refractive indices My. H, and My of the media?

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Important Questions on Light

EASY

Science>Physics>Light>Refractive Index

When a plane electromagnetic wave enters a glass slab, then which of the following will not change?

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Science>Physics>Light>Refractive Index

When light enters glass from vacuum, then the wavelength of light

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Science>Physics>Light>Refractive Index

Consider a glass cube slab of dielectric bound by the planes

x = 0, x = a; y = 0, y = b; z = 0, z = c;

with

b > a > c .

The slab is placed in air and has a refractive index of

n .

The minimum value for

n

, such that all rays entering the dielectric at

y = 0

reach

y = b

EASY

Science>Physics>Light>Refractive Index

The image of an object placed in air formed by a convex refracting surface is at a distance of

10 m

behind the surface. The image is real and is at

\frac{2^{r d}}{3}

of the distance of the object from the surface. The wavelength of light inside the surface is

\frac{2}{3}

times the wavelength in air. The radius of the curved surface is

\frac{x}{13} m

, the value of

x

is ______ .

MEDIUM

Science>Physics>Light>Refractive Index

A light wave is incident normally on a glass slab of refractive index

1.5 .

4 %

of light gets reflected and the amplitude of the electric field of the incident light is

30 \frac{V}{m},

then the amplitude of the electric field for the wave propagating in the glass medium will be:

EASY

Science>Physics>Light>Refractive Index

A monochromatic beam of light passing through water (refractive index

= 4 / 3

) has wavelength

5400 Å .

When it is refracted in glass (refractive index

= 3 / 2

) its wavelength will be

MEDIUM

Science>Physics>Light>Refractive Index

The reflected ray is completely polarized for certain angle of incidence in a transparent medium. If the angle of refraction is

30 °,

then the refractive index of the medium is

EASY

Science>Physics>Light>Refractive Index

Light of wavelength

300 nm

in medium

A

enters into medium

B

through a plane surface. If the frequency of light is

5 \times 10^{14} Hz

and the ratio of speed in medium

A

to that is medium

B

\frac{4}{5}

, the absolute refractive index of medium

B

is,

MEDIUM

Science>Physics>Light>Refractive Index

A ray of light wavelength

λ_{0}

and frequency v₀ enters a glass slab of refractive index

μ

from air. Then,

MEDIUM

Science>Physics>Light>Refractive Index

The angle of a prism is ‘

A

’. One of its refracting surfaces is silvered. Light rays falling at an angle of incidence

2 A

on the first surface returns back through the same path after suffering reflection at the silvered surface. The refractive index

μ,

of the prism is:

MEDIUM

Science>Physics>Light>Refractive Index

A ray of light strikes a glass plate at an angle of

60 °

. If the reflected and refracted rays are perpendicular to each other, the refractive index of glass is

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Science>Physics>Light>Refractive Index

Let the refractive index of a denser medium with respect to rarer medium be

n_{12}

and its critical angle be

θ_{C}

. At an angle of incidence

A

when light is travelling from denser medium to rarer medium, a part of the light is reflected and the rest is refracted and the angle between reflected and refracted rays is

90^{o}

. Angle

A

is given by

EASY

Science>Physics>Light>Refractive Index

The wavelength of a light coming from a sodium source is

645 nm

. What will be its wavelength in water, if the refractive index of water is

1.33 ?

MEDIUM

Science>Physics>Light>Refractive Index

Light of wavelength

5000 \overset{o}{A}

in air has wavelength in glass

(μ = 1.5)

equal to:

MEDIUM

Science>Physics>Light>Refractive Index

Find the value of the angle of emergence from the prism. Refractive index of the glass is $\sqrt{3}$ .

Question Image

EASY

Science>Physics>Light>Refractive Index

Which of the following graphs shows appropriate variation of refractive index

μ

with wavelength

λ

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Science>Physics>Light>Refractive Index

Blue light travelling in a vacuum has a wavelength of

450 nm .

It enters a medium whose refractive index is

1.5 .

What is its frequency in the medium?
(Speed of light in vacuum

= 3 \times 10^{8} m s^{- 1}

)

HARD

Science>Physics>Light>Refractive Index

A ray of light

A O

in vacuum is incident on a glass slab at angle

60 °

and refracted at angle

30 °

along

O B

as shown in the figure. The optical path length of light ray from

A

B

is:

EASY

Science>Physics>Light>Refractive Index

Electromagnetic waves emanating from a point $A$ (in air) are incident on a rectangular block of material $M$ and emerge from the other side as shown below. The angles $i$ and $r$ are angles of incidence and refraction when the wave travels from air to the medium. Such paths for the rays are possible,

Question Image

EASY

Science>Physics>Light>Refractive Index

When the same monochromatic ray of light travels through glass slab and through water, the number of waves in glass slab of thickness

6 cm

is same as in water column of height

7 cm

. If refractive index of glass is

1.5

then refractive index of water is

The path followed by the I light beam in K, L and M transparent medium with refractive indicesμk, μL and μm is as in the figure given below. So, what is the relationship between the refractive indices My. H, and My of the media?

Important Questions on Light

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The path followed by the I light beam in K, L and M transparent medium with refractive indices $μ_{k}, μ_{L} a n d μ_{m}$ is as in the figure given below.

So, what is the relationship between the refractive indices My. H, and My of the media?