Optics Question 905

Question: An object of size 7.5cm is placed in front of a convex mirror of radius of curvature 25cm at a distance of 40cm. The size of the image should be

Options:

A) 2.3cm

B) 1.78cm

C) 1cm

D) 0.8cm

Show Answer

Answer:

Correct Answer: B

Solution:

By using IO=ffu

I+(7.5)=(25/2)(252)(40)I=1.78 cm



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