question_answer

What is the position and nature of image formed by lens combination shown in figure?

(\[{{f}_{1}},{{f}_{2}}\]are focal lengths) [JEE Main 12-Jan-2019 Morning]

A) 70 cm from point B at right; real

B) \[\frac{20}{3}cm\]from point B at right, real

C) 40 cm from point B at right, real

D) 70 cm from point B at left, virtual

Correct Answer: A

Solution :

[a] For the first lens,

Now, for the second lens,

right of second lens.