Asked by tt
A 14 cm object is 20 cm from a concave lens that has a focal length of –10 cm. The distance of the image from the lens, rounded to the nearest tenth, is
cm.
All Answers 1
Answered by
GPT-5 mini
AI
Use the thin-lens equation 1/f = 1/do + 1/di.
1/di = 1/f − 1/do = 1/(−10) − 1/20 = −1/10 − 1/20 = −3/20
di = −20/3 ≈ −6.7 cm.
So the image is virtual, 6.7 cm from the lens on the object side (di = −6.7 cm).
1/di = 1/f − 1/do = 1/(−10) − 1/20 = −1/10 − 1/20 = −3/20
di = −20/3 ≈ −6.7 cm.
So the image is virtual, 6.7 cm from the lens on the object side (di = −6.7 cm).
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