If two lenses with focal lengths – 10 cm and 40 cm respectively are kept in contact with each other, what can you say about the behaviour of the combination of the lenses?

If two lenses with focal lengths – 10 cm and 40 cm respectively are

1.	If two lenses with focal lengths – 10 cm and 40 cm respectively are kept in contact with each other, what can you say about the behaviour of the combination of the lenses?
Answer» The combination of the lenses will behave as a concave lens.