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In Ray optics Total internal reflection is important topic. It’s one application optical fibre is there in syllabus of cbse board. So that’s important. You should know about critical angle n conditions for TIR.
Other important topics from ray optics is lens makers formula n numericals related to this.
Optical instruments Telescope n microscope both are important. Their ray diagrams for image formation at D n infinity are important. So always do written practice of Ray diagrams n their magnification.
Relation between angle of incidence & Angle of deviation is important.
Combination of lenses is also important for numericals.
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CBSE Board|State Board Important Questions Class 12 Physics
CBSE Physics Class 12 Handwritten Notes
What are Important topics of Ray optics?
Optical instruments, Total internal reflection & deviation through a prism.