Please help and explain! Select from the following for the next two questions: R

Question

Please help and explain!

Select from the following for the next two questions: Real, upright and smaller than the object Virtual, upright and smaller than the object virtual, inverted and smaller than the object virtual, upright and larger than the object Real, inverted and larger than the object virtual, inverted and larger than the object real, upright and larger than the object real, inverted and smaller than the object An object is placed 7.5 cm away from a converging lens. The lens has a focal length of 10.0 cm. Select the statement from the list above which best describes the image. An object is placed 7.5 cm away from a spherical convex mirror. The radius of curvature of the mirror is 20.0 cm. Select the statement from the list above which best describes the image. Tries 2/20 Previous Tries

Explanation / Answer

1/7.5 + 1/i = 1/10
i =-30

m = -i/o = 30/7.5=4
so virtual upright and larger
so D)

f = -R/2 = -10

1/7.5 + 1/i = 1/-10

i=-4.29
m = -i/o = 4.29/7.5
so virtual upright and smaller
so B)

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