The 200-inch-diameter concave mirror of the Hale telescope on Mount Palomar has

Question

The 200-inch-diameter concave mirror of the Hale telescope on Mount Palomar has a focal length of 14.3 m. An astronomer stands 24.2 m in front of this mirror (a) Where is her image located? 44320 Your response differs from the correct answer by more than 10%. Double check your calculations. m Is it in front of or behind the mirror? in front of the mirror behind the mirror (b) Is her image real or virtual? virtual real How do you know? Her image is real because the light passes through it. Score: 1 out of 1 Comment: ) What is the magiication o 1852 (c) What is the magnification of her image? 1.852 Your response differs from the correct answer by more than 10%. Double check your calculations

Explanation / Answer

a)
f = 14.3 m
do = 24.2 m
use:
1/f = 1/di + 1/do
1/14.3 = 1/di + 1/24.2
di = 34.96 m
Answer: 34.96 m

c)
m = -di/do
   = -34.96/24.2
     = -1.44
Answer: -1.44

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