Modules 7-9

Question 1

How do you describe the image formed by a plane mirror?

A. The image is virtual, behind the mirror, and enlarged
B. The image is virtual, behind the mirror, and of the same size as the object
C. The image is real, at the surface of the mirror and enlarged
D. The image is real, behind the mirror, and of the same size as the object

Answer 1

B

Question 2

Where should an object be placed in a concave mirror to form a real image larger
than the object?

A. at a distance equal to the radius of curvature
B. at a distance less than the focal length
C. between focus and center of curvature
D. at a distance greater than the radius of curvature

Answer 2

B

Question 3

• Anything from which light rays radiate.
• Categorized into two: point and extended

Answer 3

Objects

Question 4

• Very small objects
• Similar to point sources of light or a pin
• Drawn as a “dot”

Answer 4

Point Object

Question 5

• Large objects
• Drawn as an “arrow pointing upward”

Answer 5

Extended Object

Question 6

An optical appearance produced when light rays coming from an object are reflected from a mirror or refracted from a lens.

Answer 6

Image

Question 7

• Can be obtained on a screen.
• Formed when light rays from an object meet at a point after reflection or refraction.
• Formed by:
  ➢ concave mirror
  ➢ convex lens

Answer 7

Real Image

Question 8

• Appear to be on the lens or the mirror itself.
• Formed due to the imaginary intersection of light rays.
• Formed by:
  ➢ plane & convex mirror
  ➢ concave mirror: object is in focus
  ➢ concave lens
  ➢ convex lens: object is between F1 & V

Answer 8

Virtual Image

Question 9

When standing in front of a mirror, our right side
appears on the left side in the reflection, and vice versa.

Answer 9

Lateral Inversion

Question 10

• Bent-in surface faces the incident light
• Converging mirror
• Inner surface of a spoon

Answer 10

Concave Mirror

Question 11

• Bulging-out surface faces the incident light
• Diverging mirror
• Backside of a spoon

Answer 11

Convex Mirror

Question 12

the center of the mirror surface and is at V.

Answer 12

Vertex

Question 13

normal or perpendicular to the mirror at its
vertex.

Answer 13

Principal Axis

Question 14

• the center of the sphere of which the
  mirror is a part and is at C.
  ➢ It lies outside the reflecting surface of the mirror.

Answer 14

Center of Curvature

Question 15

the radius of the hollow sphere of a
glass of which the mirror is a part, represented by R.

Answer 15

Radius of Curvature

Question 16

distance of vertex and principal focus.

Answer 16

Focal Length