Optics
Class 12 Physics Optics — laws of reflection and spherical mirrors, refraction and Snell\u2019s law, total internal reflection, lens maker\u2019s and lens formula, prism and optical instruments, plus Huygens\u2019 principle, Young\u2019s double-slit interference, single-slit diffraction and polarisation with solved NCERT numericals.
Study by topic — one focused page each
Ray Optics: Reflection & Mirrors
Light travels in straight lines in a homogeneous medium, and a thin beam is idealised as a ray . Ray optics treats light as rays whenever apertures ar…
Start this topic → 2Ray Optics: Refraction, Lenses & Instruments
Refraction is the bending of light as it changes speed passing between media. The refractive index is , and Snell's law relates the angles: . Light be…
Start this topic → 3Wave Optics
Ray optics fails when light meets obstacles or slits comparable to its wavelength. Wave optics treats light as an electromagnetic wave and explains in…
Start this topic →Chapter-wide tests
Online Test
20 MCQ • 15 min
IMO / Olympiad Practice
Olympiad level • 15 min
📝 Full Chapter Test (Download & Print)
40 marks • 90 min • with answer key