An object 1.5cm tall is placed 10cm in front of a concave mirror. The focal length of the mirror is 4cm. Where is the image located and how tall is the image? Use a ray diagram and math.

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09-05-2019
Physics

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An object 1.5cm tall is placed 10cm in front of a concave mirror. The focal length of the mirror is 4cm. Where is the image located and how tall is the image? Use a ray diagram and math.

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Shaswat221005 Shaswat221005 · Answer 1 · 2019-05-20T19:11:40+02:00

Shaswat221005 Shaswat221005

20-05-2019

Using Mirror formula:
1/v+ 1/u= 1/f
1/v + 1/(-10) = 1/(-4)
1/v = 1/10- 1/4

v = - 6.67cm

According to Magnification formula:
H(image) / H(object) = - v/ u

H(image) = 2.64 cm

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