The virtual image produced by a convex mirror is one-quarter the size of the obj

Question

The virtual image produced by a convex mirror is one-quarter the size of the object.

Part A

If the object is 39 cm in front of the mirror, what is the image distance?

Express your answer using two significant figures.

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Part B

What is the focal length of this mirror?

Express your answer using two significant figures.

The virtual image produced by a convex mirror is one-quarter the size of the object.

Part A

If the object is 39 cm in front of the mirror, what is the image distance?

Express your answer using two significant figures.

di =   cm  

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Incorrect; Try Again; 8 attempts remaining

Part B

What is the focal length of this mirror?

Express your answer using two significant figures.

f =

Explanation / Answer

[M=-di/do-->-0.25=-x/39 --> x=39*0.25=-9.75

What is the focal length of this mirror? [1/f=1/do+1/di -- 1/f=1/39-1/9.75=-0.07692... --> 1/f=-0.07692cm --> f=1/0.07692=~13.0005

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