MCQ
Red light is generally used to observe diffraction pattern from single slit. If blue light is used instead of red light, then diffraction pattern
- AWill be more clear
- ✓Will contract
- CWill expanded
- DWill not be visualized
✓
Answer
Correct option: B.
Will contract
b
(b) ${\lambda _{{\rm{Blue}}}} < {\lambda _{{\rm{Red}}}}$. Therefore fringe pattern will contract because fringe width $ \propto \lambda $
(b) ${\lambda _{{\rm{Blue}}}} < {\lambda _{{\rm{Red}}}}$. Therefore fringe pattern will contract because fringe width $ \propto \lambda $
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