Diffraction Single Slit
First minimum in single slit diffraction at angle θ satisfies:
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About This Question
- Subject
- physics
- Chapter
- optics
- Topic
- diffraction single slit
- Difficulty
- Medium
- Year
- 2025
Solution
Correct Answer:
a sinθ = λ
In single slit diffraction (Fraunhofer diffraction), light waves from different parts of the same slit interfere.
- The condition for the nth minimum is: asinθ=nλ.
- For the first minimum (n=1): asinθ=λ.
- a is the width of the slit. Note the contrast with YDSE where dsinθ=nλ is the condition for maxima.
This medium difficulty physics question is from the chapter optics, covering the topic of diffraction single slit. It appeared in the 2025 exam.
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