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a wire mesh consisting of very small squares is viewed at a distance of 8cm through a magnifyimg converging lens of focal length 10cm, kept close to the eye. the magnification produced by lens is:-

Asked by advguptaneeraj4 20th April 2015, 6:23 PM
Answered by Expert

Hi Vishesh

begin mathsize 14px style straight u equals negative 8 space cm straight f equals 10 space cm According space to space lens space formula comma space we space have 1 over straight v minus 1 over straight u equals 1 over straight f therefore 1 over straight v equals 1 over straight f plus 1 over straight u equals 1 over 10 minus 1 over 8 therefore 1 over straight v equals fraction numerator negative 2 over denominator 80 end fraction equals negative 1 over 40 cm therefore straight v equals negative 40 space cm Hence comma space magnification space is straight m equals straight v over straight u equals fraction numerator negative 40 over denominator negative 8 end fraction equals 5 end style

Answered by Expert 20th April 2015, 6:51 PM
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