Question

(ii) If the parabolic reflector is represented by x2 – 5x, then its zeroes are:
a. 0,5
(b) -5,0
(c) -5,1
(d) 1,5​

Answer 1

Answer:

option no.a is correct, hope this helps you

Answer 2

Answer:

B

Step-by-step explanation:

your option B is wrong you can plz check.

correct option is (5,0)

Let equation parabola y2=4ax

Let equation parabola y2=4axOc=5 cm

Let equation parabola y2=4axOc=5 cmSo, x−Cordinate of point A=5

Let equation parabola y2=4axOc=5 cmSo, x−Cordinate of point A=5Ab=20

Let equation parabola y2=4axOc=5 cmSo, x−Cordinate of point A=5Ab=20AC=21×AB=10

Let equation parabola y2=4axOc=5 cmSo, x−Cordinate of point A=5Ab=20AC=21×AB=10A(5,10)

Let equation parabola y2=4axOc=5 cmSo, x−Cordinate of point A=5Ab=20AC=21×AB=10A(5,10)A Lie on the parabola it will satisfting the eqquation y2=4×9×5

Let equation parabola y2=4axOc=5 cmSo, x−Cordinate of point A=5Ab=20AC=21×AB=10A(5,10)A Lie on the parabola it will satisfting the eqquation y2=4×9×59=5

Let equation parabola y2=4axOc=5 cmSo, x−Cordinate of point A=5Ab=20AC=21×AB=10A(5,10)A Lie on the parabola it will satisfting the eqquation y2=4×9×59=5focus =(0,10)

Let equation parabola y2=4axOc=5 cmSo, x−Cordinate of point A=5Ab=20AC=21×AB=10A(5,10)A Lie on the parabola it will satisfting the eqquation y2=4×9×59=5focus =(0,10)=(5,0)