The centre of the lens is called the optical centre C. In a ray diagram ... formed by a convex lens depends on the lens used and the distance from the object to the lens. 2.

To draw the diagram of a given open ... values of u in case of a concave mirror and to find the focal length. 2. To find the focal length of a convex lens by plotting graphs between u and v ...

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CMF has released another teaser for the Phone 2 Pro. The teaser includes a close-up image of what appears to be a lens attachment. The CMF Phone 1 is a semi-modular phone that allows you to attach ...

TechRadar has been testing camera equipment for two decades. In that time, we’ve reviewed every Sony E-mount lens worth considering, from wide-angle primes to super-telephoto zooms. With so many ...

Since 2008, TechRadar has tested hundreds of compact cameras and smartphones. Thanks to that experience, we know exactly when it’s worth carrying a dedicated camera in your pocket, and what sets ...