Optics Question 690
Question: The power of an achromatic convergent lens of two lenses is + 2D. The power of convex lens is + 5D. The ratio of dispersive power of convex and concave lens will be
[Pb. PET 2003]
Options:
A) 5 : 3
B) 3 : 5
C) 2 : 5
D) 5 : 2
Show Answer
Answer:
Correct Answer: B
Solution:
So
For achromatic combination
