If lens I with focal length + 15 cm and lens II has focal length + 30 cm. find out which lens has more power.
lens I
lens II
Power of lens is independent of focal length.
None of these.
(Plens|) = 115 = 0.06 D
(Plens||) = 130 = 0.033 D
(Power)lens| > (Power)lens||
If lens A has focal length +15 cm and lens B has focal length +30 cm, find out which lens has more power?
If object is placed at 60 cm before lens I focal length of lens I is 30 cm and focal length of lens II is 45 cm. find out the image distance formed by lens II from O?