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Find the thickness of a plate which will...

Find the thickness of a plate which will produce a change in optical path equal to half the wavelength `lamda` of the light passing through it normally. The refractive index of the plate is `mu`.

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The correct Answer is:
A, B, D
Let t=thickness of the plate
Gien optical path difference
`=(mu-1)t=lamda/2`
`rarr t=lamda/(2(mu-1))`
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HC VERMA-LIGHT WAVES-Exercises
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  6. In a Young's double slit experiment using monochromatic light, the fri...

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  7. A mica strip and a polysterence strip are fitted on the two slite of ...

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

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  10. A Young's double slit apparatus has slits separated by 0.28 mm and a s...

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  11. A parallel beam of monochromatic light is used in a Young's double sli...

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  12. A narrow slit S transmitting light of wavelength lamda is placed a dis...

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  13. Two slits are made 1 min apart and the screen is placed 1 m away from ...

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  14. Consider the situation of the previous problem, if the mirror reflects...

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  15. A double slit S1-S2 is illuminated by a coherent light of wavelength l...

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  16. White coherent light (400 nm-700 nm) is sent through the slits of a YD...

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  17. Consider the arrangement shown in figure. The distance D is large comp...

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  18. Two coherent point sources S1 and S2 emit light of wavelength lambda. ...

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  19. figure shows three equidistant slits illuminated by a monochromatic pa...

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