Physics P3 1.6 Using lenses.

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What can be drawn to find the position and nature of an image formed by a lens?
A ray diagram.
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What image is formed when an object is placed between a converging lens and F?
The image formed is virtual, upright, magnified and on the same side of the lens as the object.
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What lens does a camera contain and what is it used to form?
A converging lens that is used to form a real image of an object.
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What type of lens is a magnifying glass and what is it used to form?
A converging lens that is used to form a virtual image of an object.
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What can we draw ray diagrams to find?
The image that different lenses produce with objects in different positions.
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What is the line through the centre of the lens and at right angles to it called?
The principal axis, and this should be included in your diagrams.
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Why do ray diagra s use three construction rays from a single point on the object?
To locate the corresponding point on the image.
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What happens to a ray parallel to the principal axis?
It is refracted through the principal focus.
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What happens to a ray through the centre of the lens?
It travels straight on, without refraction.
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What happens to a ray through the principal focus?
It is refracted parallel to the principal axis.
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What are construction rays?
Rays drawn on a diagram to determine the position and nature of an image.
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Is the image formed in a camera real or virtual?
Real.
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**LOOK UP AND PRACTISE DRAWING RAY DIAGRAMS TO MAKE SURE THAT YOU HAVE THE CORRET POSITION**
**
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Other cards in this set

Card 2

Front

What image is formed when an object is placed between a converging lens and F?

Back

The image formed is virtual, upright, magnified and on the same side of the lens as the object.

Card 3

Front

What lens does a camera contain and what is it used to form?

Back

Preview of the front of card 3

Card 4

Front

What type of lens is a magnifying glass and what is it used to form?

Back

Preview of the front of card 4

Card 5

Front

What can we draw ray diagrams to find?

Back

Preview of the front of card 5
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