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Unformatted text preview: nguyen (jmn727) – oldhomework 36 – Turner – (59070) 1 This printout should have 14 questions. Multiplechoice questions may continue on the next column or page – find all choices before answering. 001 (part 1 of 2) 10.0 points A convergent lens has a focal length of 14 cm . The object distance is 32 . 3 cm . q h ′ p h f f Scale: 10 cm = Find the distance of the image from the center of the lens. Correct answer: 24 . 7104 cm. Explanation: 1 p + 1 q = 1 f M = h ′ h = q p Convergent Lens f > ∞ >p> f f <q < ∞ >M >∞ Note: The focal length for a convergent lens is positive, f = 14 cm. Solution: Substituting these values into the lens equation q = 1 1 f 1 p = 1 1 (14 cm) 1 (32 . 3 cm) = 24 . 7104 cm . 002 (part 2 of 2) 10.0 points Find the magnification. Correct answer: . 765027. Explanation: M = q p = (24 . 7104 cm) (32 . 3 cm) = . 765027 . 003 (part 1 of 2) 10.0 points A divergent lens has a focal length of 18 cm . The object distance is 25 . 4 cm . f f q h ′ p h Scale: 10 cm = Find the distance of the image from the center of the lens. Correct answer: 10 . 5346 cm. Explanation: 1 p + 1 q = 1 f M = h ′ h = q p Divergent Lens f < ∞ >p> f <q < <M < 1 Note: The focal length for a divergent lens is negative, f = 18 cm. Solution: Substituting these values into the lens equation q = 1 1 f 1 p nguyen (jmn727) – oldhomework 36 – Turner – (59070) 2 = 1 1 ( 18 cm) 1 (25 . 4 cm) = 10 . 5346 cm  q  = 10 . 5346 cm . 004 (part 2 of 2) 10.0 points Find the magnification. Correct answer: 0 . 414747. Explanation: M = q p = ( 10 . 5346 cm) (25 . 4 cm) = . 414747 ....
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 Spring '08
 Turner
 Work, Photographic lens, Thin lens

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