doctor advised to use 2D lens what is the focal length of it
which lens he used
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Answered by
1
50 cm................
nithin234:
which lens
focal length not a negative one
so lenses is convex
if it is negative then
it's also called converging lens
then diverging lese
I. e concave
convex- conveging lens.concave-?
thanks
welcome
Answered by
2
Hello friend
Here's ur answer....
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Given that the power of lens P = 2D
We know that, P = 100 / f(cm)
2 = 100/f
2f = 100
f = 100/2 = 50 cm
The focal length of the lens = 50 cm
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Hope it helped u......☺️☺️
which lens
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