How does the combination of a convex lens and a concave lens each of focal length 10 cm behave? - Quora
![A convex lens of focal length F is placed in contact with a concave lens of focal length F . The equivalent focal length of the combination is: A convex lens of focal length F is placed in contact with a concave lens of focal length F . The equivalent focal length of the combination is:](https://toppr-doubts-media.s3.amazonaws.com/images/1353425/4b922a16-2861-42bf-8b90-2b29fde7abb6.jpg)
A convex lens of focal length F is placed in contact with a concave lens of focal length F . The equivalent focal length of the combination is:
![SOLVED: Use the :following known values for the combination of convex and concave lenses: Lens 1: A convex lens with focal length with fi = +20 cm Lens 2: A concave lens SOLVED: Use the :following known values for the combination of convex and concave lenses: Lens 1: A convex lens with focal length with fi = +20 cm Lens 2: A concave lens](https://cdn.numerade.com/ask_images/3209e760a7574ab8824a7fba5a935d49.jpg)
SOLVED: Use the :following known values for the combination of convex and concave lenses: Lens 1: A convex lens with focal length with fi = +20 cm Lens 2: A concave lens
![Lenses in Combination The analysis of multi-lens systems requires only one new rule: The image of the first lens acts as the object for the second lens. - ppt download Lenses in Combination The analysis of multi-lens systems requires only one new rule: The image of the first lens acts as the object for the second lens. - ppt download](https://images.slideplayer.com/23/6905239/slides/slide_3.jpg)