A converging lens with a focal length of 11.0 cm forms a virtual image 7.75 mm t

Question

A converging lens with a focal length of 11.0 cm forms a virtual image 7.75 mm tall, 17.8 cm to the right of the lens.

Part A

Determine the position of the object.

Express your answer in centimeters to three significant figures.

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Part B

Determine the size of the object.

Express your answer in centimeters to two significant figures.

A converging lens with a focal length of 11.0 cm forms a virtual image 7.75 mm tall, 17.8 cm to the right of the lens.

Part A

Determine the position of the object.

Express your answer in centimeters to three significant figures.

SubmitHintsMy AnswersGive UpReview Part

Incorrect; Try Again; 8 attempts remaining

Part B

Determine the size of the object.

Express your answer in centimeters to two significant figures.

s = cm |y| = cm

Explanation / Answer

here,

the focal length , f = 11 cm

the image distance , di = - 17.8 cm

let the object distance be do

using the lens formula

1/f = 1/di + 1/do

1/11 = - 1/17.8 + 1/do

do = 6.8 cm

the object distance is 6.8 cm

B)

the size of object be ho

hi/ho = - di/do

7.75/ho = 17.8/6.8

ho = 2.96 mm

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