I want Light reflection and refraction chapter notes

what is angle of refraction

How an electric bulb be considered as extented source of  light and as point source of light ?

A convex lens produces an image on a screen five times the size of the object. If the positions of the image and the object are interchanged, what will be the magnification ?

TELLME ANY 20 USES OF CONCAVE$CONVEX MIRRORS????

 why is it said that snell's law fails when angle of incidence is 0

What are the conditions in which snell's law fails?

a light of wavelenghth 5000angstrom  is incident on a glass slab, whose refractive index is 1.5. what will b the wavelength of incident light in glass

If the velocity of light in a medium = 2.25 x 10^8 m/s, find the refractive index of that medium?

1) Explain snell's law of refraction?

2) Explain electromagnetic induction?

 can u plz explain me abou the phenomenon of refraction through a glass slab?

How will refraction takes place in case of a ray passing through the glass slab when the angle of incidence is zero?

 about concave lense

HELLO, I AM FACING A PROBLEM WITH THE CONCEPT ATMOSPHERIC REFRACTION. PLEASE  EXPLAIN ME ABOUT EFFCTS OF ATMOSPHERIC REFRACTION

wat d uses of concave mirror?