![What is the focal length of a double convex lens for which the radius of curvature of each surface is 60 cm (n=1.5)?A. 50 cmB. 60 cmC. 90 cmD. 30 cm What is the focal length of a double convex lens for which the radius of curvature of each surface is 60 cm (n=1.5)?A. 50 cmB. 60 cmC. 90 cmD. 30 cm](https://www.vedantu.com/question-sets/c612b172-1638-4932-aed3-6e18cb8db1583222633553042593248.png)
What is the focal length of a double convex lens for which the radius of curvature of each surface is 60 cm (n=1.5)?A. 50 cmB. 60 cmC. 90 cmD. 30 cm
![To determine the focal length of a convex lens by obtaining an image of a distant object. – srishtypse2 To determine the focal length of a convex lens by obtaining an image of a distant object. – srishtypse2](https://srishtypse2.files.wordpress.com/2016/04/image003.png?w=640)
To determine the focal length of a convex lens by obtaining an image of a distant object. – srishtypse2
![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:
![List four precautions a student should observe while determining the focal length of a given convex lens by obtaining the image of a distant object on a screen. List four precautions a student should observe while determining the focal length of a given convex lens by obtaining the image of a distant object on a screen.](https://www.vedantu.com/question-sets/433569ab-3995-4e8a-8e15-9c0b0aa238d86110662179537359721.png)
List four precautions a student should observe while determining the focal length of a given convex lens by obtaining the image of a distant object on a screen.
![Calculate the focal length of a convex lens which produces a virtual image at a distance of 50 cm - YouTube Calculate the focal length of a convex lens which produces a virtual image at a distance of 50 cm - YouTube](https://i.ytimg.com/vi/0GXwBHln8OE/maxresdefault.jpg)