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प्रश्न
How do source and images behave as coherent sources?
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उत्तर
- In the source and images method, a source and its image will act as a set of coherent sources, because the source and its image will have waves in-phase or constant phase difference as shown in the following figure.
- The Instrument, Fresnel’s biprism uses two virtual sources as two coherent sources and the instrument, Lloyd’s mirror uses a source and its virtual image as two coherent sources.
Using virtual and real images of a source as coherent sources
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संबंधित प्रश्न
In Young’s double slit experiment, the slits are separated by 0.5 mm and screen is placed 1.0 m away from the slit. It is found that the 5th bright fringe is at a distance of 4.13 mm from the 2nd dark fringe. Find the wavelength of light used.
Answer in brief:
In Young's double-slit experiment what will we observe on the screen when white light is incident on the slits but one slit is covered with a red filter and the other with a violet filter? Give reasons for your answer.
What are the conditions for obtaining a good interference pattern? Give reasons.
What are the two methods for obtaining coherent sources in the laboratory?
The intensity of the light coming from one of the slits in Young's experiment is twice the intensity of the light coming from the other slit. What will be the approximate ratio of the intensities of the bright and dark fringes in the resulting interference pattern?
Explain constructive and destructive interference with the help of a diagram?
One of Young’s double slits is covered with a glass plate as shown in figure. The position of central maximum will,
Obtain the equation for resultant intensity due to interference of light.
Obtain the equation for bandwidth in Young’s double slit experiment.
Discuss the interference in thin films and obtain the equations for constructive and destructive interference for transmitted and reflected light.
If the monochromatic source in Young's double slit experiment is white light, then ____________.
The light waves from two independent monochromatic light sources are given by, y1 = 2 sin ωt and y2 = 3 cos ωt. Then the correct statement is ____________.
The distance between the first and ninth bright fringes formed in a biprism experiment is ______.
(`lambda` = 6000 A, D = 1.0 m, d = 1.2 mm)
In Young's double slit experiment fifth dark fringe is formed opposite to one of the slits. If D is the distance between the slits and the screen and d is the separation between the slits, then the wavelength of light used is ______.
Two identical light sources s1 and s2 emit light of same wavelength `lambda`. These light rays will exhibit interference if their ______.
If two light waves reaching a point produce destructive interference, then the condition of phase difference is ______
In the biprism experiment, a source of monochromatic light is used for a certain distance between slit and eyepiece. When the distance between two virtual sources is changed from dA to dB, then the fringe width is changed from ZA to ZB. The ratio ZA to ZB is ______
What is meant by Constructive interference?
The interference pattern is obtained with two coherent light sources of intensity ratio 4 : 1. And the ratio `("I"_"max" - "I"_"min")/("I"_"max" + "I"_"min")` is `5/x`. Then the value of x will be equal to ______.
A ray of light AO in a vacuum is incident on a glass slab at an angle of 60° and refracted at an angle of 30° along OB as shown in the figure. The optical path length of the light ray from A to B is ______.
