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What is the shape of the wavefront in the following case? Light diverging from a point source. - Physics

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प्रश्न

What is the shape of the wavefront in the following case?

Light diverging from a point source.

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लघु उत्तर
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उत्तर

The shape of the wavefront in the case of a light diverging from a point source is spherical. The wavefront emanating from a point source is shown in the given figure.

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पाठ 10: Wave Optics - EXERCISES [पृष्ठ २७३]

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एनसीईआरटी Physics [English] Class 12
पाठ 10 Wave Optics
EXERCISES | Q 10.2 (a) | पृष्ठ २७३

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संबंधित प्रश्‍न

Explain the construction of plane wavefront using Huygens’ principle.


Using Huygens’ principle, verify the laws of reflection at a plane surface.


Using this principle draw a diagram to show how a plane wave front incident at the interface of the two media gets refracted when it propagates from a rarer to a denser medium. Hence verify Snell's law of refraction.


State Huygens’s principle. Show, with the help of a suitable diagram, how this principle is used to obtain the diffraction pattern by a single slit.

Draw a plot of intensity distribution and explain clearly why the secondary maxima becomes weaker with increasing order (n) of the secondary maxima.


Light waves travel in vacuum along the X-axis. Which of the following may represent the wave fronts?


Derive the law of reflection using Huygen’s Wave Theory. 


With what type of source of light are cylindrical wave fronts associated?


Define a wavefront. Using 'Huygens' principle, draw the shape of a refracted wavefront, when a plane wave is incident on a convex lens.


Relation between ray and wavefront is ______.


Answer the following question briefly and to the point:

What is the phase difference between any two points lying on the same wavefront?


Wavefront means


Huygen's conception of secondary waves ______.


For light diverging from a point source ______.

  1. the wavefront is spherical.
  2. the intensity decreases in proportion to the distance squared.
  3. the wavefront is parabolic.
  4. the intensity at the wavefront does not depend on the distance.

Consider a point at the focal point of a convergent lens. Another convergent lens of short focal length is placed on the other side. What is the nature of the wavefronts emerging from the final image?


What is the shape of the wavefront on earth for sunlight?


Two light beams of intensities in the ratio of 9 : 4 are allowed to interfere. The ratio of the intensity of maxima and minima ______.


How is a wavefront different from a ray?


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