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CBSE Class 10 Answered

question dealing with FOCAL LENGTH AND CAMERA...........
Asked by krithika.r | 20 May, 2009, 03:27: PM
answered-by-expert Expert Answer

f = 100 cm; m = 20 / 1000 = 0.02

m =  v / u

v = 0.02 u

using (1 / v) - (1 / u) = (1 / f)

(1 / 0.02 u) - (1 / u) = (1 / 100)

u = 4.9 km

 

Answered by | 30 May, 2009, 11:33: AM

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