In the experiment of interference of light, the optical paths at a point differ by `73.5` times the wavelenth of blue light of `4400Å` . The nature of the illumination at the same of point using red light of wavelength `6000Å` will beA. brightB. darkC. neither bright nor barkD. none of these

In the experiment of interference of light, the optical paths at a poi

1.	In the experiment of interference of light, the optical paths at a point differ by `73.5` times the wavelenth of blue light of `4400Å` . The nature of the illumination at the same of point using red light of wavelength `6000Å` will beA. brightB. darkC. neither bright nor barkD. none of these
Answer» Correct Answer - C Path diff. `n_(b) lambda_(b)=n_(1) lambda_(r)` `=73.5xx4.4xx10^(-7)` `=(323.4xx10^(-7))/(6xx10^(-7)) =53.9` Since, path diff. `=53.9 lambda`, which is not equal to integral multiple of wavelenght or odd multiple of haf of wavelenght thus, given point is neither, bright nor dark.

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In the experiment of interference of light, the optical paths at a point differ by `73.5` times the wavelenth of blue light of `4400Å` . The nature of the illumination at the same of point using red light of wavelength `6000Å` will beA. brightB. darkC. neither bright nor barkD. none of these

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