**Lens Formula & Magnification â€“ Lens Power A Plus Topper**

27/04/2010 · I have the formula: 1/f = 1/v -1/u to find the focal length of a convex lens After appropriate sign convention, the NEW formula is: f= uv/u+v How do you get from the first equation: 1/f= 1/v - 1/u; to the second equation: f= uv/u+v I have been at it for hours trying to figure it out, so please help if you... show more I have the... 1/04/2013 · I'm studyng about focal lengths in convex and concave lenses, and I'm confused about how the focal lense changes. The question says "Using a diagram, explain whether the focal length would be greater in (a) a thick or thin convex lens (b) a thick or thin concave lens."

**Focus Length Of a Convex Lens 1/V = 1/U +1/F Ask Will**

To find the focal length of a concave lens using a convex lens by (a) Lens in contact method (b) Lens out of contact method... Lenses – Finding the Focal Length of a Convex Lens Apparatus convex lens, piece of paper, window or light source at opposite end of room or corridor Action A student holds the lens up towards the window, and holds a piece of paper on the other side of the lens. They then move the piece of paper towards and away from the lens until a focused image of the outside or a distant object such as a

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As, the focal length of a convex lens is equal to the distance between optical centre and any of its focus. So, focal length can be estimated by obtaining a real image of a distant object at its focus. how to get a job at ikea The focal length for convex lenses never changes with it being on the power of the lens. A convex is lens is thicker the further to the centre of the lens.

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In the case of a single element equi-convex thin lens, it's easy to measure focal length. You focus a point at infinity, and the distance from the center of the lens to the focal point is the focal length. how to find out what your house is made of 27/04/2010 · I have the formula: 1/f = 1/v -1/u to find the focal length of a convex lens After appropriate sign convention, the NEW formula is: f= uv/u+v How do you get from the first equation: 1/f= 1/v - 1/u; to the second equation: f= uv/u+v I have been at it for hours trying to figure it out, so please help if you... show more I have the

## How long can it take?

### Plano-Convex Lens Equation and Explanation

- Measuring the Focal Length of a Convex Lens Activity
- Concave Lenses Focal Point CBakken
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- The Focal Length Formula. Help Please.? Yahoo Answers

## How To Find Focal Length Of Convex Lens

The stronger the lens, the shorter is the focal length. Convex lenses have a positive power, and concave lenses a negative power. (The word, 'focus', comes from the Greek word meaning 'hearth'.

- convex or converging lens focus focal length S C I E N C E work Investigating convex lenses Aim To investigate the different type of images that can be produced by a convex lens. Materials • ray box • power supply • sheet of paper • plastic convex lenses • glass convex lens or a magnifying glass Method Before you start this activity, create a POE chart for the types of images you
- There are many factors that can affect the focal length of a convex lens. These include: - The thickness of the lens - The type of material that the lens is made ot of - The c … urviture of the lens - How big the distance between the lens and the image you are viewing is.
- To find the focal length of a concave lens using a convex lens by (a) Lens in contact method (b) Lens out of contact method
- To find the approximate value of the focal length of a convex lens, let us do an experiment. Place a convex some distance away from a light source.