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प्रश्न
What is the shape of the wavefront in the following case?
Light emerging out of a convex lens when a point source is placed at its focus.
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उत्तर
The shape of the wavefront in the case of a light emerging out of a convex lens when a point source is placed at its focus is a parallel grid. This is shown in the given figure.
संबंधित प्रश्न
On the basis of Huygens' wave theory of light prove that velocity of light in a rarer medium is greater than velocity of light in a denser medium.
Explain the construction of plane wavefront using Huygens’ principle.
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?
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.
A plane wave front AB propagating from denser medium (1) into a rarer medium (2) is incident on the surface P1P2 separating the two media as shown in fig.
Using Huygen’s principle, draw the secondary wavelets and obtain the refracted wave front in the diagram.
According to Huygen's construction, relation between old and new wavefront is ______.
What is the geometrical shape of the wavefront for:
- Light diverging from a point source?
- The pattern of wavefront of the light from a distant star intercepted by earth?
Huygen's conception of secondary waves ______.
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.
Is Huygen’s principle valid for longitudinal sound waves?
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?
According to Huygens’s principle, the amplitude of secondary wavelets is ______.
How is a wavefront different from a ray?
Represent diagrammatically how the incident planar wavefronts of wavelength λ pass through an aperture of size d, when d is approximately equal to λ.
Represent diagrammatically how the incident planar wavefronts of wavelength λ pass through an aperture of size d, when d is approximately equal to λ.
