A mirror forms an image which is 30 cm from an object and twice its height. (a) Where must the mirror be situated? (b) What is the radius of curvature? (c) Is the mirror convex or concave?
hordesowderneo8x7
Answered question
2023-02-16
Answer & Explanation
Kamari Potts
Beginner2023-02-17Added 10 answers
v=−2u
v−u=30.....(1)
v=−2u.....(2)
−2u−u=30 -> −3u=30cm
u=−10cm
u=−10cm
v=−2(−10)=20cm
1/f=1/v+1/u
1/f=1/20+1/−10
1/f=1−2/20 -> f=−20cm
R=2f
R=2*(−20)=−40cm
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