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प्रश्न
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.
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उत्तर
When white light is incident on the slits in Young's double-slit experiment and one of the slits is covered with a red filter, the light passing through this slit appears red. The other slit, which is covered with a violet filter, will produce violet light as emergent light. Interference fringes will be created by combining red and violet colours. If constructive interference occurs for red colour and destructive interference occurs for violet colour, fringes will be red at some points. The middle fringe will be bright, with red and violet colours mixed together.
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संबंधित प्रश्न
Laser light of wavelength 630 nm is incident on a pair of slits which are separated by 1.8 mm. If the screen is kept 80 cm away from the two slits, calculate:
1) fringe separation i.e. fringe width.
2) distance of 10th bright fringe from the centre of the interference pattern
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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:
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`[sin 45^circ = cos 45^circ = 1/sqrt 2]`
