Home
Class 12
PHYSICS
(b) If the principal source point S was ...

(b) If the principal source point S was to be moved a little upwards, towards the slit `S_(1)` from its usual symmetrical position with respect to the two slits `S_(1)andS_(2)` discuss how the interference pattern, obtained on the screen, would get affected.

Text Solution

Verified by Experts

If main source is shifted towards `S_(1)` the intensity `S_(1)` will be more and central bright on the screen will not remain as bright. The path difference of two rays meeting at central of screen will no more be zero.
Fringe width and position of secondary maxima and will minima will also get affected.
Promotional Banner

Topper's Solved these Questions

  • XII BOARDS

    XII BOARDS PREVIOUS YEAR|Exercise Section -A|15 Videos

  • XII BOARDS

    XII BOARDS PREVIOUS YEAR|Exercise Section -B|12 Videos

  • XII BOARDS

    XII BOARDS PREVIOUS YEAR|Exercise SECTIONS-E|4 Videos

  • SAMPLE PAPER 2019

    XII BOARDS PREVIOUS YEAR|Exercise SECTION D|6 Videos

Similar Questions

Explore conceptually related problems

In an interference experiment, the two slits S_(1) and S_(2) are not equidistant from the source S. then the central fringe at 0 will be

Two coherent point sources S_1 and S_2 are separated by a small distance d as shown. The fringes obtained on the screen will be

In the set up shown in figure, the two slits S_1 and S_2 are not equidistant from the slit S. The central fringe at O is then

In a young’s double slit experiment the distance between slits S1 and S2 is d and distance of slit plane from the screen is D (gtgt d) . The point source of light (S) is placed a distance (d) / (2 ) below the principal axis in the focal plane of the convex lens (L). The slits S1 and S2 are located symmetrically with respect to the principal axis of the lens. Focal length of the lens is f (gtgt d) . Find the distance of the central maxima of the fringe pattern from the centre (O) of the screen.

In the arrangement shown, S is a point source of monochromatic light. S1 and S2 are two slits located sym- metrically with respect to the source with separation between them d_(1) . Parallel to this slit plane there are two more slits (S3 and S4) at separation d_(2) . These slits are also symmetrically located with respect to S. A screen is at a distance L_(2) from this slit plane. How does the intensity on the screen change with y and d_(1) ?

In figure, a screen is placed normaol to the line joining the two point coherent sources S_(1) and S_(2) . The interference pattern consists of concentric circles. Find the radius of the nth bright ring

In figure, a screen is placed normaol to the line joining the two point coherent sources S_(1) and S_(2) . The interference pattern consists of concentric circles. Also, find the value of radius for this ring.

Find the ratio of intensities at the two points X and Y on a screen in Young's double slit experiment, where waves from the two source S_(1) and S_(2) have path difference of zero, and lambda//4 respectively.