Question:
If the source of light used in a Young's double slit experiment is changed from red to violet:
Correct Option: , 2
Solution:
(2)
$\beta=\frac{\lambda \mathrm{D}}{\mathrm{d}}$
As $\lambda_{\mathrm{v}}<\lambda_{\mathrm{R}}$
$\Rightarrow \beta_{\mathrm{v}}<\beta_{\mathrm{R}}$
$\therefore$ Consecutive fringe line will come closer.
$\therefore(2)$
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