Q4 of 31 Page 67

Find the distance of the image when an object is placed on the principal axis at a distance of 10cm in front of a concave mirror whose radius of curvature is 8 cm. (AS1)

object distance (u) = -10cm image distance (v) = ?

Radius of curvature (R) = -8cm


Focal length (f) = R/2 = -8/2 = -4cm


Using mirror formula:








v = -40/6 cm = -6.67cm


The negative sign denotes that the image will be formed on the left side of the mirror that is on the same side as that of the object.


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