MIRRORS - AQA PHYSICS P3

Law of Reflection: equal angles 1. PLANE (FLAT) MIRROR ACTUAL light path APPARENT light path normal Law of Reflection: equal angles VIEWER OBJECT IMAGE: same size, equal distance behind

PLANE MIRROR: UPRIGHT, SAME SIZE, VIRTUAL

CONCAVE MIRROR normal focus Concave mirrors are CONVERGING

CONVEX MIRROR virtual focus Convex mirrors are DIVERGING

RAY DIAGRAMS FOR CURVED MIRRORS focal length 1. Ray parallel to axis is reflected through the focus 2. Ray to centre is reflected at equal angle (law of reflection) (3. Ray through focus is reflected parallel to axis)

1. Draw the following on graph paper 2cm large square 2F F F 2F 2. Draw an object outside F at the position shown and at the size shown 3. Apply the ray diagram rules and draw in the image 4. Classify the image by filling in the table below. Repeat for other positions CONCAVE Object pos. Image pos. mag/dim upright/Inverted real/virtual outside F at F inside F (4 *) Uses 5. Repeat the process for CONVEX mirrors (use VIRTUAL FOCUS) (*for Inside F make F 4 squares away)

1. CONCAVE MIRROR: OBJECT OUTSIDE F IMAGE: INVERTED, DIMISHED, REAL uses

2 CONCAVE MIRROR: OBJECT AT F IMAGE: PARALLEL RAYS – NO IMAGE uses

3. CONCAVE MIRROR: OBJECT INSIDE F IMAGE: UPRIGHT, MAGNIFIED, VIRTUAL uses

1. CONVEX MIRROR: OBJECT INSIDE F IMAGE: UPRIGHT, DIMINISHED, VIRTUAL uses

2. CONVEX MIRROR: OBJECT OUTSIDE F IMAGE: UPRIGHT, MAGNIFIED, VIRTUAL (AGAIN) uses

1. CONCAVE MIRROR: OBJECT OUTSIDE F Real image then MAGNIFIED by eyepiece lens Back to diagram

2 CONCAVE MIRROR: OBJECT AT F Used in 2 ways: to project a parallel beam of light from the light source at the focus OR in reverse – to focus incoming (distant) parallel waves

2 CONCAVE MIRROR: OBJECT AT F: light from focus into parallel beam

2 CONCAVE MIRROR: OBJECT AT F: parallel rays brought to focus Solar power station Solar cooker Back to diagram

3. CONCAVE MIRROR: OBJECT INSIDE F Back to diagram

CONVEX MIRROR: ALL OBJECT POSITIONS Security mirrors give a view of a wide area

The Arnolfini Marriage 1434 Back to diagram The Arnolfini Marriage 1434