Optics Question 938

Question: What will be the height of image when an object of 2 mm is placed on the axis of a convex mirror at a distance 20 cm of radius of curvature 40 cm

[Orissa PMT 2004]

Options:

A) 20 mm

B) 10 mm

C) 6 mm

D) 1 mm

Show Answer

Answer:

Correct Answer: D

Solution:

$ \frac{I}{O}=\frac{f}{f-u}\Rightarrow \frac{I}{2}=\frac{20}{20+20}=\frac{1}{2} $

Therefore $ I=1mm $



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