A concave shaving mirror has a focal length
of 36 cm.
a) Calculate the image position of a cologne
bottle placed in front of the mirror at a distance
of 76 cm. (Answer with −1000 if the
image does not exist.)
Answer in units of cm.
1
Expert's answer
2018-05-22T10:03:08-0400
According to the mirror equation 1/a+1/b=1/f, where a – is the distance of the object to the surface of the mirror; b – is the distance of the image to the surface of the mirror; f – is the focal length. We have 1/b=1/f-1/a ⇒ b=1/(1/f-1/a)=1/(1/36-1/76)=68.4 cm
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