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Physics — Wave Optics: Interference & Diffraction
Mr. Rafiq Ahmed · Class X-B · Chapter 12
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Wave Optics — Key Concepts
  • Interference: superposition of two coherent waves
  • Young's Double Slit: fringe width β = λD/d
  • Diffraction: bending of light around obstacles
  • Single slit pattern: central maxima = 2λD/a
  • Applications: anti-reflective coatings, holograms
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Mr. Rafiq AhmedTeacher
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📊 Quick Poll from Teacher
What is the fringe width formula?
β = λD/d
β = λd/D
β = Dd/λ
β = D/λd
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❓ Q&A 3
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Mr. Rafiq Ahmed Teacher
Welcome everyone! Today we'll cover Wave Optics. Please keep your mics muted unless asked.
7:00 AM
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Sadia Akter
Good morning sir! 👋
7:01 AM
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Nusrat Khan
Sir, will we cover diffraction grating today?
7:15 AM
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Mr. Rafiq Ahmed Teacher
Yes Nusrat, we'll touch on diffraction grating in the second half. Great question!
7:16 AM
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Tanvir Hossain
The formula for fringe width: β = λD/d. Noted 📝
7:24 AM
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Mahfuz Rahman
Sir, can you explain why central maxima is brightest?
7:30 AM
Why does white light produce colored fringes in thin films?
Nusrat Khan · 7:18 AM
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What's the difference between Fresnel and Fraunhofer diffraction?
Tanvir Hossain · 7:25 AM
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Can interference happen with non-coherent sources?
Sadia Akter · 7:32 AM
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