If rays of light parallel to the optic axis are incident on a ______ mirror, the

Question

If rays of light parallel to the optic axis are incident on a ______ mirror, they appear to from a point after leaving the mirror. a. flat b. convex c. concave d. diffuse A ray of light parallel to the optic axis of a convex mirror is reflected back a. through the center of curvature for the mirror. b. through the focal point. c. parallel to the optic axis. d. as if it came from the focal point. The focal length of a curved mirror is _____the radius of the spherical surface. a. twice b. equal to c. half d. one-quarter If the Sun is 150 million km away from Earth, how long does it take Sunlight to reach a. 0.5 s b. 15 s c. 45 s d. 500 s What color would you see if a white piece of paper is simultaneously illuminated green light? a. white b. black c. magenta d. yellow

Explanation / Answer

21) If rays of light parallel to the optic axis. . . .

Ans : b. convex mirror

22) A ray of light parallel to the optic axis. . . .

Ans : d. as if it came from the focal point

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