Q.39. In Young's double slit experiment, the fringe width of the interferences pattern produced on the screen is 2.4 . If the experiment is carried out in another medium having refractive index 1.2, the fringe width will be ______ .

Sol. Since Fringe width in a medium becomes $\beta' = \frac{\beta}{\mu}$. Given $\beta = 2.4 \mu m$ and $\mu = 1.2$. $\beta' = \frac{2.4}{1.2} = 2 \mu m$.

What is the correct answer for this exam Physics Q39?

The correct answer is A. Sol. Since Fringe width in a medium becomes $\beta' = \frac{\beta}{\mu}$. Given $\beta = 2.4 \mu m$ and $\mu = 1.2$. $\beta' = \frac{2.4}{1.2} = 2 \mu m$.

Q.39. In Young's double slit experiment, the fringe width of the interferences pattern produced on the screen is 2.4 . If the experiment is carried out in another medium having refractive index 1.2,…

The correct answer is A. Sol. Since Fringe width in a medium becomes $\beta' = \frac{\beta}{\mu}$. Given $\beta = 2.4 \mu m$ and $\mu = 1.2$. $\beta' = \frac{2.4}{1.2} = 2 \mu m$.

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Q.39. In Young's double slit experiment, the fringe width of the interferences pattern produced on the screen is 2.4 $\mu m$. If the experiment is carried out in another medium having refractive index 1.2, the fringe width will be ______ $\mu m$.

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