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Huygens' Principle

Light of wave...

Question

Light of wavelength lamda enters a medium with refractive index n2 from a medium with refractive index n1.What is the wave lenght in second medium?

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Q. Light of wavelength

λ_{1}

enters a medium with refractive index

n_{2}

from a medium with refractive index

n_{1}

. What is the wavelength of light in second medium?

Q. When a light rays enters a medium with refractive index

n_{2}

from a medium with refractive index

n_{1}

at curved interface with radius of curvature

R

\frac{n_{2}}{V} - \frac{n_{1}}{U} = \frac{n_{2} - n_{1}}{R}

Now assume that the surface is plane and rewrite the formula with suitable changes.

Q. Monochromatic light of wavelength

λ_{1}

travelling in a medium of refractive index

μ_{1}

enters a denser medium of refractive index

μ_{2}

. The wavelength in the second medium is:

Q. A monochromatic beam of light is travelling from medium

A

of refractive index

n_{1}

B

of refractive index

n_{2}

. In the medium

A

x

number of waves in certain distance. In the medium

B

y

number of waves in the same distance. Then, refractive index of medium

A

with respect to medium

B

Q. A light wave enters from air into a medium of refractive index

\frac{4}{3}

. If wavelength of light in air is

6000 ˚ A

, then the wave number of light in the medium is:

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