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CBSE Class 10 Answered

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Asked by gunjansingh | 20 May, 2009, 05:05: PM
answered-by-expert Expert Answer

f = 15 cm; m = 3; u = ?

m = v / u

v = 3 u

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

(1 / 3 u) - (1 / u) = (1 / f)

- 2 / 3u = 1 / f

u = - 2 x f / 3 = - 10 cm

Answered by | 30 May, 2009, 10:30: AM

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