Problem 18.38 A 3.0-cm-tall object is 20 cm in front of a concave mirror that ha
ID: 1502079 • Letter: P
Question
Problem 18.38
A 3.0-cm-tall object is 20 cm in front of a concave mirror that has a 25 cm focal length.
Part A
Calculate the image position.
Express your answer to two significant figures and include the appropriate units.
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Part B
Calculate the image height. Type a positive value if the image is upright and a negative value if it is inverted.
Express your answer to two significant figures and include the appropriate units.
Problem 18.38
A 3.0-cm-tall object is 20 cm in front of a concave mirror that has a 25 cm focal length.
Part A
Calculate the image position.
Express your answer to two significant figures and include the appropriate units.
s =SubmitMy AnswersGive Up
Part B
Calculate the image height. Type a positive value if the image is upright and a negative value if it is inverted.
Express your answer to two significant figures and include the appropriate units.
Explanation / Answer
1/s+ 1/s' = 1/f
1/s' = 1/f - 1/s
1/s' = 1/25 - 1/20
s' = -100 cm
m = -s'/s = hi/ho
100/20 = hi/3
hi = 15 cm