An object is held 70.7 cm away from amirror. The mirror has a focal length of 39

Question

An object is held 70.7 cm away from amirror. The mirror has a focal length of 39.6 cm.

a.) Determine the image distance.
1 cm

b.) Determine the magnification.
2

c.) If the object is 7.3 cm long,determine the image height.
3 cm

d.) Which of the followingare true about the image? Choose all that apply. 4 The image is virtual.
The image is inverted.
The image is upright.
The image is real.

4 The image is virtual.
The image is inverted.
The image is upright.
The image is real. 4 The image is virtual.
The image is inverted.
The image is upright.
The image is real. 4

Explanation / Answer

do = 70.7 cm, f = 39.6 cm a) 1/di + 1/do = 1/f di = 90.0 cm b) m = -di/do = -1.27 c) 1.27*7.3 = 9.27 cm d) inverted, real

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