For Part C I have already tried the following answers and they are wrong: 35 cm,

Question

For Part C I have already tried the following answers and they are wrong: 35 cm, 12 cm. <----- THESE ARE WRONG.

For Part D I have already tried the following answers and they are wrong: 4 cm, 17 cm. <----- THESE ARE WRONG.

Figure 1 of 1 1.0 cm 10 cm 30 cm 5.0 cm 5.0 cm lens mirror Part C What is the distance between the final image and the lens? Express your answer to two significant figures and include the appropriate units. 12 cm Submit My Answers Give Up Incorrect; Try Again; 4 attempts remaining Part D What is the height of the final image? Express your answer to two significant figures and include the appropriate units. 17 cm My Answers Give Up Submit Incorrect; Try Again; 4 attempts remaining

Explanation / Answer

Here ,

Here , for the first lens

do1 = 5 cm

f1 = 10 cm

let the image distance is di1

Using lens formula

1/f1 = 1/do1 + 1/di1

1/5 = 1/10 + 1/di1

di1 = 10 cm

Now, for the second lens

do2 = 5 - 10 = - 5 cm

Using mirror formula

1/(-30) = -1/5 + 1/di2

di2 = 6 cm

Now, for the third image made from lens

do = -1 cm

1/(10) = -1/1 + 1/di

di = 0.91 cm

the final image is located at 0.91 cm from the lens

part D)

height of final image = ho * (di1 * di2)/(do1 * do2)

height of final image = 1 * (10 * 6)/(5 * 5) * (0.91)

height of final image = 2.2 cm

the height of final image is 2.2 cm

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