Question

An object 10cm long is placed at 15cm away from a convex mirror of focal length 10cm find the position and size of the image

Answer 1

Answer:

position of the image is 6cm behind the convex mirror and size of the is 4cm

Explanation:

hi = 10cm

u = -15cm

f = 10cm

v = ?

position of the image = ?

size of the image = ?

by mirror formula

1/f = 1/v + 1/u

1/10 = 1/v + 1/-15

1/10 + 1/15 = 1/v

3 + 2/30= 1/v

5/30 = 1/v

v = 6cm

so, the position of the image is 6cm behind the convex mirror

hi/ho = -v/u

hi/10 = -6/-15

hi = 20/5

hi = 4cm

so, the size of the image is 4cm

Answer 2

answer is there

answer is there

answer is there