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A screen is placed 50cm from a single sl...

A screen is placed 50cm from a single slit, which is illuminated with 6000Å light. If distance between the first and third minima in the diffraction pattern is 3.0 mm, what is the width of the slit?

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`D=50 cm, lambda=600 nm`
`y_(3)-y_(1)=(3Dlambda)/a=(Dlambda)/a=(2Dlambda)/a`
`3xx10^(-3)=(2xx0.5xx600xx10^(-9))/a`
`a=200xx10^(-6) m=0.2 mm`
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CP SINGH-WAVE NATURE OF LIGHT-EXERCISES
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  9. The velocity of light in diamond, glass and water decreases in the fol...

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  10. Choose the correct option:

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  11. Choose the correct option: (i) A surface on which the wave disturban...

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  12. A wavefront and a ray of light are

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  13. Huygen's principle of secondary waves

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  14. Huygen's priciple of secondary wavelets may be used to

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  15. Which one of the following phenomena is not explained by Huygens const...

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  16. By Huygen's wave theroy of light, we cannot explain the phenomenon of

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  18. In the adjacent diagram, CP represents a wavefront and AO & BP, the co...

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  19. Which of the following sources gives best mionochromatic light?

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  21. Two sources of light are said to be coherent if the waves produced by ...

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