Optics Question 355
Question: The focal lengths of the objective and the eye-piece of a compound microscope are 2.0 cm and 3.0 cm respectively. The distance between the objective and the eye-piece is 15.0 cm. The final image formed by the eye-piece is at infinity. The two lenses are thin. The distances in cm of the object and the image produced by the objective measured from the objective lens are respectively
[IIT 1995]
Options:
A) 2.4 and 12.0
B) 2.4 and 15.0
C) 2.3 and 12.0
D) 2.3 and 3.0
Show Answer
Answer:
Correct Answer: A
Solution:
When final image is formed at infinity, length of the tube
