O 4/3/2017 11:55 PM A 67.9/100 4/3/2017 03:48 PM Gradebook Print i Calculator Pe

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O 4/3/2017 11:55 PM A 67.9/100 4/3/2017 03:48 PM Gradebook Print i Calculator Periodic Table Question 12 of 14 ncorrect Incorrect Map Sapling Learning macmillan learning A toy car is placed 61.0 cm from a convex mirror. The image of the car is upright but one-third as large as the actual car. Calculate the mirror's power in diopters. Number 1.6 There is a hint available! View the hint by clicking on the bottom divider bar. Click on the divider bar again to hide the hint. Close A Previous Give Up & View Solution Check Answer Next E Exit Hint

Explanation / Answer

u = 61 cm

from lateral magnification m = hi/ho = 1/3

-v/u = 1/3

v = - 61/3

from mirror formula

1/f =1/u +1/v

1/f = 1/61 -3/61

f = -30.5 cm = -0.305 m

P = 1/f =-1/0.305

P = -3.28 D

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