Question

A sperical mirror produces an image of magnification -1 on a screen placed at a distance of 30cm from the pole of the mirror a)write the type of mirror used. b)find the focal length of this mirror. c)calculate the object distance. d)what is the nature of the image formed. e)draw the ray diagram to show the image formation​

Answer 1

Answer:

a] Ans :The type of mirror is concave mirror

[ the magnification is negative ]

b] Ans : m = -v/u  = -1

v = u = -30 cm

so , distance = [v] +[u] = 60 cm

c] Ans :

1/f = 1/v + 1/u

= 1/-30 + 1/-30 = -1/15

d] ans : check the attachment , it is the answer to ur question.