Advertisements
Advertisements
प्रश्न
Light waves travel in vacuum along the X-axis. Which of the following may represent the wave fronts?
पर्याय
x = c
y = c
z = c
x + y + z = c
Advertisements
उत्तर
x = c
The wave is travelling along the X-axis. So, it'll have planar wavefront perpendicular to the X-axis.
APPEARS IN
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.
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.
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)
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?
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.
According to Huygens principle, ______.
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?
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.
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.
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 ______.
How is a wavefront different from a ray?
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.
What type of wavefronts are associated with a point source of light?
