A thin lens has a focal length of 25.0 cm. (a) Locate the image when the object

Question

A thin lens has a focal length of 25.0 cm.

(a) Locate the image when the object is placed 27.7 cm in front of the lens. (Enter a negative distance if the image is in front of the lens.)
cm from the lens Choose the correct description of the image. (Select all that apply.)

virtualinvertedrealreducedenlargedupright

(b) Locate the image when an object is placed 23.3 cm in front of the lens. (Enter a negative distance if the image is in front of the lens.
cm from the lens Choose the correct description of the image. (Select all that apply.)

reducedrealinvertedvirtualuprightenlarged

Explanation / Answer

ans a) f = 25.0 cm => 1/u + 1/v = 1/f

thus

Part a) 256.48 cm ( Real and inverted, and highly magnified)

Pat b) -342.647 cm ( Virtual Upright and highly magnified )

Both the images are formed on the opposite side the object is placed.

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