Chapter 12 Geometrical Optics

Geometrical Optics

Quiz

 

1. • What is the angle of incidence if the angle of reflection is 30 degrees?
   1.   60 degrees
   2.   30 degrees
   3.   . 45 degrees
   4.   . 15 degrees
2. The law of reflection states that:
   1.   . The angle of incidence is equal to the angle of refraction
   2.   . The angle of incidence is equal to the angle of reflection
   3.   The angle of incidence plus the angle of reflection is 90 degrees
   4.   . The angle of incidence is complementary to the angle of reflection
3. • Which type of mirror forms a virtual image?
   1.   . Convex mirror
   2.   . Concave mirror
   3.   . Plane mirror
   4.   . Both A and C
4. In a concave mirror, the image formed by an object placed between the focus and the mirror is:
   1.   . Real and inverted
   2.   . Virtual and upright
   3.   Real and upright
   4.   . Virtual and inverted
5. • The point where all parallel rays converge after reflecting from a concave mirror is called the:
   1.   . Focus
   2.   . Center of curvature
   3.   Principal axis
   4.   . Optical center
6. • The focal length of a convex lens is:
   1.   . The distance from the lens to the image
   2.   The distance from the lens to the object
   3.   . The distance from the lens to the focus
   4.   . The distance from the lens to the center of curvature
7. Which type of lens is thicker at the center than at the edges?
   1.   . Convex lens
   2.   Concave lens
   3.   . Plane lens
   4.   Cylindrical lens
8. • When light passes from air into water, it:
   1.   . Speeds up
   2.   Slows down
   3.   . Reflects
   4.   Passes through unchanged
9. • The bending of light as it passes from one medium to another is called:
   1.   . Reflection
   2.   . Diffraction
   3.   Refraction
   4.   . Dispersion
10. • In a convex mirror, the focal length is:
    1.   . Positive
    2.   . Negative
    3.   . Zero
    4.   . Infinite