![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
![A convex lens A of focal length 20cm and a concave lens G of focal length 5cm are kept along the same axis with the distance between them. If a parallel beam A convex lens A of focal length 20cm and a concave lens G of focal length 5cm are kept along the same axis with the distance between them. If a parallel beam](https://www.vedantu.com/question-sets/5f16a0a5-95d2-4cb5-b754-7a6788995bd93435487036600868184.png)
A convex lens A of focal length 20cm and a concave lens G of focal length 5cm are kept along the same axis with the distance between them. If a parallel beam
![A combination of concave and convex lens in contact is placed over a plane mirror. When a pin P is placed as shown in the figure, the image is formed at the A combination of concave and convex lens in contact is placed over a plane mirror. When a pin P is placed as shown in the figure, the image is formed at the](https://d1hj4to4g9ba46.cloudfront.net/questions/1592926_eb4bebb20a0f4befb7b4b63e1e9b8ed7.png)
A combination of concave and convex lens in contact is placed over a plane mirror. When a pin P is placed as shown in the figure, the image is formed at the
A magnifying glass is a combination of a convex lens of focal length 5cm and a concave lens of power 5D.If the dis†an ce of distinct vision is 20cm,calculate the magnifying power
![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:
![To find the focal length of a concave lens using a convex lens - Learn CBSE | Lens, Focal length, Telescope craft To find the focal length of a concave lens using a convex lens - Learn CBSE | Lens, Focal length, Telescope craft](https://i.pinimg.com/originals/6b/6b/e3/6b6be36c06a06063ba117e605d4fbc32.png)