Ray Optics

Question 1

Plane mirror definition

Answer 1

flat mirror. Image formed is virtual, because we cannot place a screen behind the mirror and see the image projected on the screen.

Question 2

Diverging mirror definition

Answer 2

Also called a convex mirror, this mirror diverges the rays of light that strike it (wide view).

Question 3

Virtual focus definition

Answer 3

a point behind a diverging mirror from which the rays appear to originate

Question 4

Focal Length f definition

Answer 4

Distance between the surface of the mirror at its center and the focal point

Question 5

Converging mirror definition

Answer 5

Also called a concave mirror. Light rays coming i parallel to the principal axis of the mirror will converge to a focal point.

Question 6

Diverging lens definition

Answer 6

a lens that is thicker on the edges than it is in the middle, and it diverges the light rays that pass through it. Also called a concave lens.

Question 7

Converging lens

Answer 7

a lens that is thicker in the middle than on the edges, and it converges parallel rays that pass through it. Also called a convex lens

Question 8

Magnification Using a Converging Lens equation

Answer 8

M = abs(di/d0), where di and d0 are the image distance and object distance measured from the lens respectively.