A converging lens has a focal length of 12.6 cm. (a) Locate the object if a real

Question

A converging lens has a focal length of 12.6 cm. (a) Locate the object if a real image is located at a distance from the lens of 50.4 cm. distance _____ cm location: front side of lens or back side of lens (b) Locate the object if a real image is located at a distance from the lens of 63.0 cm. distance ____ cm location: front side of lens or back side of lens (c) Locate the object if a virtual image is located at a distance from the lens of -50.4 cm. distance ____cm location: front side of lens or back side of lens (d) Locate the object if a virtual image is located at a distance from the lens of -63.0 cm. distance ________cm location: front side of lens or back side of lens

Explanation / Answer

1/v+1/u = 1/f 1/12.6 = 1/50.4 + 1/u so u = 16.8 cm behind mirror b)

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