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
Posted: Sun Apr 17, 2022 3:48 pm
- 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 26 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 26 times
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.