13. At what distance from a concave mirror of focal length 10 cm should an object 2 cm long be placed in order
to get an erect image 6 cm tall ?
Anyone ???
Answers
Answered by
1
Answer:
Given that focal length, f= -10cm
Magnification, m= Image height/ Object height= 6/2 = 3
Also magnification= - v/u
3= -v/u
v= -3u
As 1/u + 1/v = 1/f
1/u + 1/-3u = 1/ -10
Therefore u= -6.667
So object should be placed at a distance of 6.667 cm in front of the mirror.
Similar questions
English,
4 months ago
Science,
4 months ago
Computer Science,
4 months ago
Accountancy,
8 months ago
Geography,
10 months ago
Social Sciences,
10 months ago