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CBSE Class 10 Answered

Numerical
Asked by | 01 Jul, 2009, 10:13: PM
answered-by-expert Expert Answer

h = 4 cm; u = - 15 cm; P = - 10 D;

f = 1 / P = - 10 cm

usinf lens formula

1 / f = (1 / v) - (1 / u)

1 / (- 10) = (1 / v) - (1 / - 15)

1 / v = - (1 / 15) - (1 / 10) = - 1 / 6

v = - 6 cm

since m = h' / h = v / u

h' = v x h / u = (-6) x 4 / (- 15) = 1.6 cm

 

Answered by | 02 Jul, 2009, 09:39: AM

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