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Question
An object of height 10 cm is placed at a distance of 100 cm before the convex mirror perpendicular below the principal axis. If the focal length of the mirror is 10 cm, on applying the Cartesian sign convention, find the object distance.
An object of height 10 cm is placed at a distance of 100 cm before the convex mirror perpendicular below the principal axis. If the focal length of the mirror is 10 cm, on applying the Cartesian sign convention, find the object distance.
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Solution
The correct option is A -100cm
In a cartesian system distance towards left is negative and towards right is positive. height upwards is positive height downward is negative.
given:
hence u=−100cm
μo=−10cm
In a cartesian system distance towards left is negative and towards right is positive. height upwards is positive height downward is negative.
given:
hence u=−100cm
μo=−10cm
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