HARD
12th Tamil Nadu Board
IMPORTANT
Earn 100

Prove law of refraction using Huygens' principle.

Important Questions on Optics

EASY
12th Tamil Nadu Board
IMPORTANT

Using Huygen's principle,

draw a diagram to show propagation of a wave front when the source is at infinity,

MEDIUM
12th Tamil Nadu Board
IMPORTANT
How physical phenomenon of refraction is explained  on the basis of Huygen's theory
MEDIUM
12th Tamil Nadu Board
IMPORTANT
Consider the following statements:
For experimental observation of good interference fringes, the interfering beams should be
1. Coherent
2. Of equal intensity
3. Of same polarisation
Which of the above are correct?
HARD
12th Tamil Nadu Board
IMPORTANT
The light beams of intensities in the ratio of 9:1 are allowed to interfere. What will be the ratio of the intensities of maxima and minima?
EASY
12th Tamil Nadu Board
IMPORTANT
For sustained interference fringes in the double-slit experiment, essential condition/s is/are
1. The sources must be coherent.
2. The intensities of the two sources must be equal.
Here, the correct option is:
EASY
12th Tamil Nadu Board
IMPORTANT
If the two slits in Young's double-slit experiment, are of unequal width, then
EASY
12th Tamil Nadu Board
IMPORTANT
 In the case of light waves from two coherent sources S1 and S2, there will be constructive interference at an arbitrary point P, if the path difference S1P-S2P is
EASY
12th Tamil Nadu Board
IMPORTANT
Which of the following is the path difference of destructive interference?