Question

If you stand 20cm in front of a convex mirror having radius of curvature 20cm. Where will the image be formed? Write down the nature of image formed. Draw the ray diagram.​

Answer 1

Answer:

15 cm

Explanation:

R = 20 cm, f = R/2= 10cm

P = ? ( distance of the object )

q = 2p ( from definition of the magnification )

Formula for concave mirror is

1/f = 1/p + 1/q

1/f = 1/p + 1/2p

1/f = 3/2p

P = 3f/2 = ( 3×10cm )/2

P = 15cm.