Question

All formulas of chapter light reflection and refraction

Answer 1

Formulas related to reflection of light,
=> in reflection angle of incidence is equal to angle of relection,
<i=<r
=>mirror formula
1/f = 1/u +1/v
where f is the focal length of mirror
u is the object distance
v is the image distance
=> magnification = height of image/height of object
m=hi/ho
wher m is the magnification
hi is the height of image
ho is the height of object
=>also m=-v/u


formulaes related to refraction of light,
=> n =sini/sinr
where n is the refractive index
i is angle of incidence
r angle of refraction
=>lens formula
1/f =1/v -1/u
=>power of lens,p=1/f(in m )
p=100/f(in cm)
=>power of combination of lens
P=P1+P2+P3...
=>magnification ,m=hi/ho
m=v/u
=> refractive index n21=speed of light in medium one /speed of light in medium 2

n21=v1/v2