Law of reflection - The angle of reflection θr equals the angle of incidence θi., Refraction - If the light ray enters the new medium at an angle, the light ray bends., Lensmakers’ equation - 1/f=(n-n0)/n0 (1/R1 -1/R2 ), Thin lens equation - 1/f=1/d_0 +1/d_i, Magnification - m=-d_i/d_0, Image from concave mirror if d_0>R - Real, inverted, smaller, Image from concave mirror if 〖f<d〗_0<R - Real, inverted, larger, Spherical mirror equation - 2/R=1/d_0 +1/d_i, Reflected ray - is a ray of light reflected from a surface, Incident ray - is a ray of light striking a surface., Total internal reflection - is when all the light in a more dense material is reflected (none is refracted)., Image in plane mirrors - Same size, left-right reversed, upright and virtual, Dispersion, Critical angle - When the angle of incidence reaches the ___________, the angle of refraction becomes 90° to the normal, and total internal reflection occurs., Huygens’ Principle - Every point on a wave front is itself the source of spherical wavelets, and the secondary wavelets emanating from different points mutually interfere,

Geometric optics

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