An object is held 81.2 cm away from a mirror. The mirror has a focal length of 4

Question

An object is held 81.2 cm away from a mirror. The mirror has a focal length of 44 cm.

a.) Determine the image distance.
________cm

b.) Determine the magnification.
___________

c.) If the object is 6.6 cm long, determine the image height.
____________ cm
d.) Which of the following are true about the image? Choose all that apply.
The image is inverted.
The image is real.
The image is upright.
The image is virtual.

e.) Which of the following are true about the mirror? Choose all that apply.
The mirror is concave.
The mirror is diverging.
The mirror is converging.
The mirror is convex.

Explanation / Answer

image and focal length are both +ve so concave mirror so converging : -->ans of (e) ; a) 1/f= 1/u+1/v ; solving v=96.04cm---->>ANSWER of a) magnification =v/u =1.182 --->ANSWER of b) v= u*1.182=6.6*1.182 =7.8cm---->ANSWER of c) as it is a concave mirror., the image is inverted and real = >Answer of d)

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