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Find the range of frequency of light tha...

Find the range of frequency of light that is visible to an average human being `(400nmltlamdalt700nm)`

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The correct Answer is:
A, C, D
Given that: `400nmltlamda,700nm`
`1/(700nm)lt1/lamdalt1/(400nm)`
`1/(7xx10^-7)lt1/lamdalt1/(4xx10^-7)`
`=(3xx10^8)/(7xx10^-7)ltc/lamdalt(3xx10^8)/(4xx10^-7)`
`[where c=sped of light `=3xx10^8m/s`]
`rarr 4.3xx10^14ltc/lamdalt7.5xx10^14`
`rarr 4.3x10^14Hzltflt7.5xx10^14Hz`
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HC VERMA-LIGHT WAVES-Exercises
  1. Find the range of frequency of light that is visible to an average hum...

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  2. The wavelength of sodium light in air is 589 nm. (a) Find its frquenc...

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  3. The index of refraction of fused quartz is 1.472 for light of waveleng...

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  4. The speed of the yellow light in a certain liquid is 2.4 x 10 8 ms^-1....

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  5. Two narrow slits emitting light in phase are separated by a distance o...

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  6. The separation between the. consecutive dark fringes in a Young's doub...

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  7. In a double slit interference experiment, the separation between the s...

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  8. In a Young's double slit experiment, two narrow vertical slits placed ...

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  9. Find the angular separation between the consecutive bright fringes in ...

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  10. A source emitting light of wavelengths 480 nm and 600 nm is used in a ...

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  11. White light is used in a Young's double slit experiment. Find the mini...

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  12. Find the thickness of a plate which will produce a change in optical p...

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  13. A plate of thickness t made of a material of refractive index mu is pl...

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  14. A transparent paper (refractive index = 1.45) of thickness 0.02 mm is ...

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  15. In a Young's double slit experiment using monochromatic light, the fri...

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

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

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  18. A thin paper of thickness 0.02 mm having a refractive index 1.45 is pa...

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

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

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