RAY OPTICS
Q.1 An object lies on the principal axis of a concave mirror with radius of curvature 160 cm. Its
vertical image appears at a distance 70 cm from it. Determine the position of the object and
also the magnification.
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Answer:
Given
Radius of curvature, R = 160 cm
Focal length, f = R/2 = 80 cm
Distance of the image, v = 70cm (sign is positive as virtual image)
By applying mirror's formula
magnification = -v/u
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