Question

the radius of curvature of a concave mirror is 40 cm and object distance from the concave mirror is 10 centimetre find the image distance from the object.​

Answer 1

Answer:

The distance of image, v = -20 cm

Explanation:

Given,

Radius of curvature, r = 40 cm

Distance of object, u = 10 cm

We know,

f = r/2

= 40/2

= 20 cm

We know,

1/u + 1/v = 1/f

or, 1/v = 1/f - 1/u

or, 1/v = 1/20 -1/10

or, 1/v = -0.05

or, v = -20