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प्रश्न
What is the shape of the wavefront in the following case?
The portion of the wavefront of light from a distant star was intercepted by the Earth.
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उत्तर
The portion of the wavefront of the light from a distant star intercepted by the Earth is a plane.
संबंधित प्रश्न
What is the shape of the wavefront in the following case?
Light diverging from a point source.
You have learnt in the text how Huygens’ principle leads to the laws of reflection and refraction. Use the same principle to deduce directly that a point object placed in front of a plane mirror produces a virtual image whose distance from the mirror is equal to the object distance from the mirror.
Use Huygens' principle to verify the laws of refraction.
When the width of the slit is made double the original width, how would this affect the size and intensity of the central diffraction band?
Huygens' principle of secondary wavelets may be used to
(a) find the velocity of light in vacuum
(b) explain the particle behaviour of light
(c) find the new position of a wavefront
(d) explain Snell's Law
Light waves travel in vacuum along the X-axis. Which of the following may represent the wave fronts?
With what type of source of light are cylindrical wave fronts associated?
Answer the following question.
Define the term wavefront. Using Huygen's wave theory, verify the law of reflection.
According to Huygens principle, ______.
According to Huygen's construction, relation between old and new wavefront is ______.
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?
The inverse square law of intensity is valid for a
Figure shows a standard two slit arrangement with slits S1, S2, P1, P2 are the two minima points on either side of P (Figure). At P2 on the screen, there is a hole and behind P2 is a second 2-slit arrangement with slits S3, S4 and a second screen behind them.
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?
Two light beams of intensities in the ratio of 9 : 4 are allowed to interfere. The ratio of the intensity of maxima and minima ______.
According to Huygens’s principle, the amplitude of secondary wavelets is ______.
What type of wavefronts are associated with a source infinity?
Using Huygen’s wave theory of light, show that the angle of incidence is equal to the angle of reflection. Draw a neat and labelled diagram.
