Optics Question 583
Question: A concave and convex lens have the same focal length of 20 cm and are put into contact to form a lens combination. The combination is used to view an object of 5 cm length kept at 20 cm from the lens combination. As compared to the object, the image will be
[CPMT 1986; RPMT 1997]
Options:
A) Magnified and inverted
B) Reduced and erect
C) Of the same size as the object and erect
D) Of the same size as the object but inverted
Show Answer
Answer:
Correct Answer: C
Solution:
Resultant focal length = $ \infty $
$ \therefore $ It behaves as a plane slab of glass.
