Applications Of Reflection Of Light
When a light ray (termed as the incident ray) hits a surface and bounces back (forms a reflected ray), the process of reflection of light has taken place.
Sign Convention for Mirrors
A mirror is made of glass that is coated with a metal amalgam on one side due to which the light ray incident on the surface undergoes reflection and not refraction.
4. A pencil is held perpendicular to the optical axis of a concave spherical mirror. The pencil is 87 cm from the center of the mirror, and its image is found 18cm from the mirror
a. Find the focal length of the mirror
b. What is the radius of curvature of the mirror?
c. What is the magnification of the pencil’s image?
The answer is:
a. f= 15 cm
b. R= 30 cm
c. m = – 0.21 cm
I DON'T KNOW IF IT IS CORRECT(prove it please)
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