21 If The Radius Of Curvature Of The Concave Mirror Is R The Focal Length Is A R 2 B R C 2r D Cannot Be Determi 1 (10.64 KiB) Viewed 33 times
21 If The Radius Of Curvature Of The Concave Mirror Is R The Focal Length Is A R 2 B R C 2r D Cannot Be Determi 2 (14.13 KiB) Viewed 33 times
21) If the radius of curvature of the concave mirror is r, the focal length is a) r/2. b) r. c) 2r. d) cannot be determined from the information given
9) The angle of incidence a) must equal the angle of reflection. b) is always less than the angle of reflection. C) is always greater than the angle of reflection. d) may be greater than, less than or equal to the angle of reflection.
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