What happens to an incident ray that passes through the focal point of a concave mirror? An incident ray passing through the focal point is reflected so.

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Presentation transcript:

What happens to an incident ray that passes through the focal point of a concave mirror? An incident ray passing through the focal point is reflected so that it is parallel to the axis. An incident ray that can be extended to pass through the focal point of a convex mirror will be reflected parallel to the axis. 21-Feb-16

Using lenses L.O  Design a camera.  Predict at what distance a convex lens can act as a magnifying glass. 21-Feb-16 Homework: workbook pages Revision session today in KC3.

21-Feb-16 constructing ray diagrams

21-Feb-16 formation of a real image by a convex lens

21-Feb-16 linear magnification

21-Feb-16 linear magnification

21-Feb-16 focussing a camera

21-Feb-16 camera aperture

21-Feb-16 Changing the aperture

21-Feb-16 A camera contains a converging lens that is used to form a real image of an object.

FF2F 5. OBJECT INSIDE F IMAGE: VIRTUAL*, UPRIGHT, MAGNIFIED IMAGE POSITION: inside 2F & SAME SIDE AS OBJECT uses end show *VIRTUAL Image: Light does NOT actually pass through it – cannot be projected onto a screen Arrow key to animate slide

5. OBJECT INSIDE F IMAGE: VIRTUAL, UPRIGHT, MAGNIFIED IMAGE POSITION: inside 2F & SAME SIDE AS OBJECT Back to diagra m Magnifying glass

21-Feb-16 Task: Workbook page

Using lenses L.O.:  What type of lens is used in a camera and magnifying glass.  What type of image is formed in a camera and magnifying glass? 21-Feb-16