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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
Explain the construction of plane wavefront using Huygens’ principle.
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.
Consider a plane wave front incident on a thin convex lens. Draw a proper diagram to show how the incident wave front traverses through the lens and after refraction focusses on the focal point of the lens, giving the shape of the emergent wave front.
Use Huygens' principle to verify the laws of refraction.
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.
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?
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.
According to Huygen's construction, relation between old and new 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?
What is the shape of the wavefront on earth for sunlight?
According to Huygens’s principle, the amplitude of secondary wavelets is ______.
What type of wavefronts are associated with a source infinity?
Which book by Christiaan Huygens is cited as an important work?
Which types of motion was Christiaan Huygens the first to analyse?
What improved devices did Christiaan Huygens design?
What happens when a small stone is dropped on a calm pool of water?
What kind of construction is Huygens' principle essentially?
In Huygens' principle, what does each point of the wavefront act as?
How do wavelets emanating from points on a wavefront spread?
For what other type of wavefront can Huygens' principle determine the shape during propagation through a medium?
