Three lenses L_(1) , L_(2) , L_(3) are placed co-axially as shown in figure. Focal length's of lenses are given 30 cm , 10 cm and 5 cm respectively. If a parallel beam of light falling on lens L_(1), emerging L_(3) as a convergent beam such that it converges at the focus of L_(3) . Distance between L_(1) and L_(2) will be

Three lenses L_(1) , L_(2) , L_(3) are placed co-axially as shown in f

1.	Three lenses L_(1) , L_(2) , L_(3) are placed co-axially as shown in figure. Focal length's of lenses are given 30 cm , 10 cm and 5 cm respectively. If a parallel beam of light falling on lens L_(1), emerging L_(3) as a convergent beam such that it converges at the focus of L_(3) . Distance between L_(1) and L_(2) will be
Answer» 40 CM 30 cm 20 cm 10 cm Answer :C

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