if an object is kept 20cm away from the lens and image is formed 40cm away from the lens then what is the focal length
Answers
Answered by
2
Answer:well it can be 40/3 or - 40/3
Explanation:since the nature of the lens is not specified but same equation of lens applies here as
1/v - 1/u= 1/f
Where u = -20 and
v= 40 and put the values in the formula and solve for it
Similar questions