An object is placed perpendicular to the prinupal axis of a convex bens of focal leugth 20cm at a distance of 30cm fim the leus - find (i) the position (ii) magnificator and (iii) the nature of the image formed.
An object is placed perpendicular to the prinupal axis of a convex bens of focal leugth 20cm at a distance of 30cm fim the leus - find (i) the position (ii) magnificator and (iii) the nature of the image formed.
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V = 20cm
U = 30cm
By lens formula
1/v - 1/4 = 1/6
1/v - (1/-30) = 1/20
1/v + 1/30 = 1/20
1/v = 1/20 - 1/30
1/v = 3-2/60
1/v = 1/60
i) Magnification, m = hi/no = v/u
ii) m = v/u = 60/-30 = -2
Nature, magnification is negative hence, It is real inverted.