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Asked by  | 22nd Mar, 2013, 12:07: PM

Expert Answer:

u+v = 70 v = 70-u hi/ho = v/u 40/100 = 70-u / u 4/10 = 70-u / u 14u = 700 u = 50 cm v = 70-50 = 20 cm 1/v - 1/u = 1/f 1/20 - 1/50 = 1/f 5-2/100 = 1/f f = 100/3 = 33.3 cm

Aswered by  | 22nd Mar, 2013, 06:05: PM

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