optics review

how does light radiate from a point-like source?

how does light radiate from an extended source?

what happens when light hits a flat mirror?

Angle of Incidence = Angle of Reflection

what happens when light hits a concave mirror?

Light bounces back through the focal point

what happens when light hits a convex mirror?

Light bounces away

What type of image is formed when an object is located beyond the center for MIRRORS?

Concave: real, inverted, demagnified

Convex: virtual, upright, demagnified

What type of image is formed when an object is located between the center and focal point for MIRRORS?

Concave: real, inverted, magnified

Convex: virtual, upright, demagnified

What type of image is formed when an object is located at the focal point for MIRRORS?

Concave: No image

Convex: virtual, upright, demagnified

What type of image is formed when an object is located closer to the focal point for MIRRORS?

Concave: virtual, upright, magnified

Convex: virtual, upright, demagnified

What type of image is formed when an object is located beyond the center for LENS?

Concave: Real, inverted, demagnified

Convex: Virtual, upright, demagnified

What type of image is formed when an object is located between the center and focal point for LENS?

Concave: Real, inverted, magnified

Convex: Virtual, upright, demagnified

What type of image is formed when an object is located at the focal point for LENS?

Concave: No image

Convex: Virtual, upright, demagnified

What type of image is formed when an object is located closer to the focal point for LENS?

Concave: Virtual, upright, magnified

Convex: Virtual, upright, demagnified

what happens when an object is inside the focal point?

it becomes virtual, magnified, and upright

what are nearsighted glasses?

concave

what are farsighted glasses?

convex

Ray diagram for an object placed at the center from a convex mirror

backwards z

Ray diagram for an object placed at the center from a concave mirror

backwards z in a box (includes the images) with tail in bottom left corner

Ray diagram for an object placed at the center from a convex lens

sideways rhombus with tail on the back

Ray diagram for an object placed at the center from a concave lens

intersects with mirror, 2 rays

Inside a movie theater projector is a small screen that displays the movie. It’s similar to the screen in a modern smartphone but much brighter. The lens in the projector produces a highly magnified image of this screen for everyone in the theater to see. Draw a ray diagram for this situation.

real, magnified, convex

A person putting on makeup sees a 2.5 x magnified upright image of their face when their face is 20 cm from a mirror. Draw a ray diagram for this situation

concave, virtual, magnified

what if s’ is negative?

virtual image

what if s’ is positive?

real image

A container is partially filled with water with a layer of oil floating on top. The only difference in the two cases is the type of oil that was used. In case A, the laser totally internally reflects off the boundary, but in case B the same laser goes through at a larger angle. The angle of incidence for the laser is the same in case A and case B. Which oil has a larger index of refraction? Explain your answer. 

case b, it has a larger index of refraction as it has a larger angle

what happens in an internally reflected object?

angle of incidence is greater than the critical angle

what happens if the critical angle value is large?

n2/n1 is large

what if the m value is negative?

inverted object and real

what if the m value is positive

upright but virtual

in what type of mirror is f negative?

convex

in what type of lens is f negative?

concave