A parabolic reflector is 20cm in diameter and 5cm deep. Which one of the following is co-ordinates of its focus? A) 0, 5 B) (0, -5) C) (5, 0) D) (-5,…
Class 12 Mathematics · 2081 · Solved Question with Answer
A parabolic reflector is 20cm in diameter and 5cm deep. Which one of the following is co-ordinates of its focus?
A) 0, 5 B) (0, -5) C) (5, 0) D) (-5, 0)