Question

An object is placed at a large distance in front of a cinvex mirror of radius of curvature 40cm how for is image behind the the mirror

Answer 1

Given,
R = 40 cm
f = 40/2
  = 20 cm
focal length of concave mirror,f = -20 cm
1/v + 1/u = 1/f
1/v + 1/∞ = -1/20
1/v = -1/20
v = -20 cm

IF THE ANSWER IS CORRECT MARK AS BRAINIEST...

Answer 2

R = 40 cm

f = 40/2

= 20 cm

focal length of concave mirror,f = -20 cm

1/v + 1/u = 1/f

1/v + 1/∞ = -1/20

1/v = -1/20

v = -20 cm

IF THE ANSWER IS CORRECT MARK AS BRAINIEST...