Select from the following for the next two questions: A virtual, upright and sma

Question

Select from the following for the next two questions: A virtual, upright and smaller than the object B real, upright and larger than the object C virtual, upright and larger than the object D real, upright and smaller than the object E virtual, inverted and larger than the object F real, inverted and larger than the object G virtual, inverted and smaller than the object H real, inverted and smaller than the object An object is placed 7.9 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. An object is placed 7.9 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. Tries 0/20

Explanation / Answer

A. R=20 cm F=R/2=10cm

1/7.9 + 1/i = -1/10

i = -4.4

m = -i/o = 4.4/7.9

So virtual, upright and larger

B. F=10cm, R=20 cm

1/7.9+ 1/i = 1/10
i =-37.6
m = -i/o = 37.6/7.9= 4.75

Real inverted and larger than the object.

When image is within the focal length in case of convex mirror, image formed is behind the object,larger than object.. But in case of lens,it is inverted,real &larger.

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