More lenses. Object O stands on the central axis of a thin symmetric lens. For t

Question

More lenses. Object O stands on the central axis of a thin symmetric lens. For this situation (see the table below, all distances are in centimeters), find (a) the lens type, converging or diverging, (b) the image distance i, and (c) the lateral magnification m. It also refers to whether (d) the image is real or virtual, (e) inverted or noninverted from O, and (f) on the same side of the lens as O or on the opposite side. (b) c) d (f) Type m R/VI/NI Side +15+7.9 (b) Number Units (c) Number Units

Explanation / Answer

a) Converging lens as f is positive

b) i = 1/ (1/f - 1/o) = 1/ (1/15 - 1/7.9) = - 16.69 cm

c) M = - i/o = 16.69/7.9 = 2.11

d) Image is real as image forms in the other side of the lens.

e) Noninverted as M is positive

f) other side of lens as i and o have opposite signs

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