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  • A two slit Young's experiment is done with monochromatic light of wavelength . Slits are <img alt="2 \ma

A two slit Young's experiment is done with monochromatic light of wavelength 6000 \AA. Slits are 2 \mathrm{~mm} apart and fringes are observed on a screen placed 10 \mathrm{~cm} away from the slits. If a transparent plate of thickness 0.5 \mathrm{~mm} is placed in front of one of the slit, interference pattern shifts by 5 \mathrm{~mm}. Then refractive index of transparent plate should be

Option: 1

1.1


Option: 2

1.2


Option: 3

1.3


Option: 4

1.5


Answers (1)

best_answer

\mathrm{ (\mu-1) t=\frac{x d}{D} \text { or } \mu=1+\frac{x d}{D t} }

\mathrm{ \text { or } \mu=1+\frac{0.5 \times 0.2}{10 \times 0.05}=1+0.2=1.2 }

Posted by

himanshu.meshram

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