Home
Class 12
PHYSICS
The intensity of the light coming from o...

The intensity of the light coming from one of the slits in a Young's double slit experiment is double the intensity from the other slit. Find the ratio of the maximum intensity to the minimum intensity in the interference fringe pattern observed.

Text Solution

Verified by Experts

The intensity of the light origiN/Ating from the first sit is double the intensity from the second slit. The amplitudes of the two interfering waves are in the ratio `sqrt2:1, say sqrt2 A and A.
At the point of constructive interference, the resultant amplitude becomes `(sqrt2+1)A.` At the points of destructive interference, this amplitude is `(sqrt2-1)` A. The ratio of the resultant intensities at the maxima to that at the minima is
`((sqrt2+1)^2A^2)/((sqrt2-1)^2A^2=34.`
Promotional Banner

Topper's Solved these Questions

  • LIGHT WAVES

    HC VERMA|Exercise Question for short Answer|11 Videos

  • LIGHT WAVES

    HC VERMA|Exercise Objective -1|17 Videos

  • LIGHT WAVES

    HC VERMA|Exercise Exercises|41 Videos

  • GEOMETRICAL OPTICS

    HC VERMA|Exercise Exercises|79 Videos

  • MAGNETIC FIELD

    HC VERMA|Exercise Exercises|60 Videos

Similar Questions

Explore conceptually related problems

When we close one slit in the Young's double slit experiment, then

If young's double slit experiment is performed in water

A Young's double slit experiment is performed with white light.

In Youngs double slit experiment, to increase the fringe width

If the source of light used in a young's double slit experiment is changed from red to violet

In Young's double slit experiment light waves are coherent. Why?

The width of one of the two slits in a Young's double slit experiment is double of the other slit. Assuming that the amplitude of the light coming from a slit is proportional to the slit width, find the ratio of the maximum to the minimum intensity in the interference pattern.

In Young's Double slit Experiment, if one of the slits is closed, what happens?