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13 - Mirrors and Lenses

# 13 - Mirrors and Lenses - Physics 8B 13 Mirrors and Lenses...

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Physics 8B 13 – Mirrors and Lenses rev 4.0 1 13 – Mirrors and Lenses 1. For each of the cases below, determine (both mathematically and by ray tracing) i. The x-location of the image ii. Whether the image is real or virtual iii. Whether image is inverted or the same orientation as the object iv. Whether the image is bigger, same size, or smaller than the object a) Object at x = 0 cm and a converging mirror f = +6 cm at x = +12 cm. b) Object at x = 0 cm and a converging mirror f = +18 cm at x = +12 cm. c) Object at x = +6 cm and a concave mirror with radius of curvature r = 24 cm at x = -12 cm. d) Object at x = 0 cm and a diverging mirror f = -12 cm at x = +12 cm. e) See Diagram f) Object at x = -18 cm and a plane mirror at x = 0 cm. Physics 8B 13 – Mirrors and Lenses rev 4.0 2 x = -24 x = 0 x = 24 x = -24 x = 0 x = 24 x = -24 x = 0 x = 24 x = -24 x = 0 x = 24 x = -24 x = 0 x = 24 F a) b) c) d) e) Object x = -24 x = 0 x = 24 f)

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Physics 8B 13 – Mirrors and Lenses rev 4.0 3 2. For each case a mirror is at the origin. Determine by ray tracing and mathematically what the focal length of the mirror is. a) b) c) The passenger side mirror on a car often has a message on it that reads, ‘Objects in mirror are closer than they appear’. What type of mirror is this? Explain. x = -24 x = 0 x = 24 Object Image x = -24 x = 0 x = 24 Object Image Physics 8B 13 – Mirrors and Lenses rev 4.0 4 3. A real image is formed 40.0cm from a spherical mirror, the image being twice the size of the object.
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