EASY
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Which of the following phenomenon cannot be explained by the Huygens' wave theory?

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Important Questions on Wave Optics

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Which of the following are true?

A. Speed of light in vacuum is dependent on the direction of propagation.

B. Speed of light in a medium is independent of the wavelength of light.

C. The speed of light is independent of the motion of the source.

D. The speed of light in a medium is independent of intensity.

Choose the correct answer from the question given below :

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On a hot summer night, the refractive index of air is the smallest near the ground and increases with a height from the ground. When a light beam is directed horizontally, the Huygens' principle leads us to conclude that as it travels, the light beam,

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For light diverging from a finite point source
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If a star emitting orange light moves away from the earth, its colour
MEDIUM
A light beam travelling along the X-axis with planar wavefront is incident on a medium of thickness, t. In the region, where light is falling the refractive index can be taken to be varying such that dndy>0. The light beam on the other side of the medium will emerge
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A galaxy moves with respect to the earth so that Sodium line of 589.0 nm is observed at 589.6 nm. The speed of the galaxy is
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A plane wave front is incident on a thin prism, thin convex lens and a concave mirror separately. The wave front(s) emerging out from the
HARD
Using Huygens' principle, establish the law of reflection.
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Huygens' wave theory of light cannot explain.
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A beam of light with a plane wavefront needs to be transformed into one with a convergent spherical wavefront. For this purpose, which of the following may be suitable?
HARD
Define the term "refractive index" of a medium. Verify Snell's law of refraction when a plane wavefront is propagating from a denser to a rarer medium.
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Considering the fact that the speed of light in glass is not independent of the colour of light, which of the statement is true?
HARD
Define the term wavefront. Using Huygen's wave theory, verify the law of reflection.
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Due to Doppler's effect the shift in wavelength observed is 0.1 Å for a star producing wavelength 6000 Å. Velocity of recession of the star will be
MEDIUM

Deduce  Snell's law of refraction for a plane wave using Huygens' principle.

HARD
Derive the law of reflection using Huygen's Wave Theory.
HARD
Using Huygens’s wave theory, derive Snell’s law of refraction.
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When light propagates through a material medium of relative permittivity ϵr and relative permeability μr, the velocity of light, v is given by : (c - velocity of light in vacuum)
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The wave front is a surface in which
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The shape of wave front at a very large distance from source is ________.