Wave Optics
Telangana Open School (TOSS) · Class 12 · Physics
Complete topic list for Wave Optics in Telangana Open School (TOSS) Class 12 Physics. Key concepts, sub-topics, and what to focus on for board exams.
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Topics in Wave Optics
Huygens' Principle and Wavefronts
- Huygens' principle states that every point on a wavefront acts as a source of secondary wavelets.
- The new wavefront is the forward envelope of these secondary wavelets.
- Wavefronts can be spherical, plane, or cylindrical depending on the source.
Interference of Light
- Interference occurs due to superposition of waves from coherent sources.
- Coherent sources have the same frequency, amplitude, and constant phase difference.
- Constructive interference: Path difference = nλ; Phase difference = 2nπ.
Diffraction of Light
- Diffraction is the bending of light around obstacles or apertures comparable to its wavelength.
- Single-slit diffraction produces a central bright maximum with weaker secondary maxima.
- Width of central maximum is twice that of secondary maxima.
Polarization of Light
- Polarization confirms light is a transverse wave.
- Unpolarized light has vibrations in all planes perpendicular to direction of propagation.
- Plane-polarized light has vibrations confined to one plane.
Key Concepts
Central concept: Wave Optics
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