An object is 28 cm in front of a converging lens with a focal length of 4.6 cm .

Question

An object is 28 cm in front of a converging lens with a focal length of 4.6 cm .

Part A

Use ray tracing to determine the location of the image.

Express your answer to two significant figures and include the appropriate units.

1cm

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Part B

Is the image upright or inverted?

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An object is 28 cm in front of a converging lens with a focal length of 4.6 cm .

Part A

Use ray tracing to determine the location of the image.

Express your answer to two significant figures and include the appropriate units.

1cm

SubmitMy AnswersGive Up

Incorrect; Try Again; 7 attempts remaining

Part B

Is the image upright or inverted?

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Correct

Explanation / Answer

1/f = 1/do + 1/di
do is distance between an object and a lens, the distance di between the lens and the image position, and the focal length f of the lens
1/4.6 = 1/28 + 1/di
1/di = 1/4.6 - 1/28
1/di = 0.181
di = 0.181cm

magnification M = -di / do = -(0.181) / 28 = - 0.00646
Since M is negative the image would be inverted and 0.00646times bigger

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