Maharashtra Class 9 Answered
An object placed at 20 cm from concave mirror forms a real inverted image at a distance 40 cm from the concave mirror . Find the focal length of the concave mirror
Asked by savitadurge | 01 Mar, 2022, 01:53: PM
Expert Answer
object is placed at distance of 20 cm in front of concave mirror.
u = - 20 cm ( object is placed to the left of the mirror)
v = - 40 cm
focal length of concave mirror, f= ?
By mirror formula,
focal length of concave mirror is negative and its value is 13.33 cm in this case.
Answered by Shiwani Sawant | 01 Mar, 2022, 03:20: PM
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