What lens of focal length should be used to clearly see an object 20cm infront of the eye
Answers
Answered by
2
Answer:
A converging lens is better known to us as convex lens. These lenses are thick from middle and thin from the edges so the parallel rays of light coming straight gets refracted and gets converged.
A diverging lens is better known to us as concave lens. These lenses are thin from middle and curved inside from the sides so the parallel rays of light coming straight gets refracted and diverge out from the lens.
Various parameters of both the lenses are calculated by using the lens formula -
1/f
=
1/u + 1/v
Similar questions