Advertisements
Advertisements
प्रश्न
How is a wavefront different from a ray?
Advertisements
उत्तर
- The ray indicates the direction of propagation of the wave while the wavefront is the surface of the constant phase.
- The ray at each point of a wavefront is normal to the wavefront at that point.
APPEARS IN
संबंधित 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.
State Huygen’s principle.
Use Huygens' principle to verify the laws of refraction.
The refractive indices of water and diamond are `4/3` and 2.42 respectively. Find the speed of light in water and diamond. (c = 3x108 m/s)
Define the term wavefront. Using Huygen’s wave theory, verify the law of reflection.
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 ______.
For light diverging from a point source ______.
- the wavefront is spherical.
- the intensity decreases in proportion to the distance squared.
- the wavefront is parabolic.
- the intensity at the wavefront does not depend on the distance.
What is the shape of the wavefront on earth for sunlight?
Represent diagrammatically how the incident planar wavefronts of wavelength λ pass through an aperture of size d, when d is approximately equal to λ.
