Optics Question 819
Question: A convex lens is in contact with concave lens. The magnitude of the ratio of their focal length is 2/3. Their equivalent focal length is 30 cm. What are their individual focal lengths?
Options:
A) -15, 10
B) -10, 15
C) 75, 50
D) -75, 50
Show Answer
Answer:
Correct Answer: A
Solution:
[a]
