Question

An object is placed at 20cm from a convex mirror of focal length 10cm.the image formed by a mirror is?



im writing physics..pls..ans.to this

Answer 1

Hello friend,
u=-20cm
f=10cm
1/f=1/v+1/u
1/v=1/f-1/u
1/v=1/10-(-1/20)
1/v=2/20+1/20
1/v=3/20
v=20/3cm
hope it helps.

Answer 2

Dear Student,

● Answer -

v = 6.67 cm

◆ Explaination -

# Given -

u = 20 cm

f = 10 cm

# Solution -

Using lens formula,

1/v - 1/u = 1/f

1/v = 1/u + 1/f

1/v = 1/20 + 1/10

1/v = 3/20

v = 20/3

v = 6.67 cm

The image formed by mirror is at 6.67 cm, and is minimized.

Thanks dear. Hope this helps you...