Academic Integrity: tutoring, explanations, and feedback — we don’t complete graded work or submit on a student’s behalf.

As shown in the figure , a candle is at the center of curvature of a concave mir

ID: 1297138 • Letter: A

Question

As shown in the figure , a candle is at the center of curvature of a concave mirror whose focal length is 11.55cm . The converging lens has a focal length of 29.31cm and is 85cm to the right of the candle. The candle is viewed through the lens from the right. The lens forms two images of the candle. The first is formed by light passing directly through the lens. The second image is formed from the light that goes from the candle to the mirror, is reflected, and then passes through the lens.
For each image, answer the following question

A. Where is the image? (s'1, and s'2)

Explanation / Answer

1/s + 1/s' = 1/f

1/85 + 1/s' = 1/29.31

s' = 44.7 cm

------------------------------------------------

1/s + 1/s' = 1/f

1/23.1 + 1/s' = 1/11.55

s' = 23.1 cm

So the image from the mirror, becomes the new object fo the lens, is at the same location as the object

So final image position = 44.7 cm [to the right of the lens]