the focal length of a concave mirror is 20 cm find the position of the image of an object placed at the distance of 30 cm from the mirror
Answers
Answered by
25
Mirror Formula
→ 1/f = 1/v + 1/u
- f = Focal Length
- v = Image distance
- u = Object distance
→ 1/(- 20) = 1/v + 1/(- 30)
→ - 1/20 + 1/30 = 1/v
→ (- 3 + 2)/60 = 1/v
→ - 1/60 = 1/v
→ v = - 60 cm
Hence image is formed on left side [due to negative sign] 60 cm away from mirror.
v = - 60 cm
Anonymous:
great
Answered by
18
Given:
Solution:
From mirror formula:
Similar questions