A covex lens of focal length 10cm is placed in contact with a concave lens of focal length 20cm. What will be the focal length of this combination of lenses ?
TarunTejeswi:
if any doubt please say to me
Answers
Answered by
2
Answer:
Concave lens with focal length 10cm
Step-by-step explanation:
focal length of convex lens =10cm
focal length of concave lens=20cm
focal length of combination =10-20
-10 cm
which is known as concave lens with focal length 10cm.
Similar questions