Optics Question 624
Question: An object of height 1.5 cm is placed on the axis of a convex lens of focal length 25 cm. A real image is formed at a distance of 75 cm from the lens. The size of the image will be
[MP PET 1999]
Options:
A) 4.5 cm
B) 3.0 cm
C) 0.75 cm
D) 0.5 cm
Show Answer
Answer:
Correct Answer: B
Solution:
$ \frac{I}{O}=\frac{f-v}{f} $
$ \Rightarrow \frac{I}{+1.5}=\frac{(25-75)}{25}=-2 $
$ \Rightarrow I=-3cm $
