the lens has A focal length of 25 cm and the lens B has a focal length 60 cm. giving reason state which lens has more power A or B.
Answers
Answered by
4
The Power of Lens A is more. Power of lens depends on focal length and power is inversely proportional to the focal length of lens.
Answered by
5
power of A::
25cm = o.25m
of B ::;
60cm = o.60
=0.6m
power formula..of lens A
D= 1/f
= 1/0.25
=4D
power formula for lens B
= 1 /0.6
= 10/6
=1.666666...
=1.667 D
thus power of lens A is more
Similar questions