The image of an object placed at a distance of 30 cm from a convex mirror is formed at 10 cm from the mirror. Calculate the focal length of the mirror.
Answers
Answered by
0
Answer:
focal lenght= -7.5cm
Explanation:
u=+30 and f=-10
by applying lens formula
1/u+1/v=1/f
1/30 + 1/v = -1/10
1/v = -1/10 - 1/30 = -3/30 - 1/30 = -4/30
v = -30/4 = -7.5 cm meaning virtual and erect. And quarter the size of the object.
Similar questions