Answer:
focal length depends on the radius of curvature, the refractive index of lens material, and the medium's refractive index in which the lens is placed
I don’t rly get ur question
Answer:
it depends if it is alpha ,beta or gamma
Explanation:
if alpha use paper
if beta use some clothing or aluminium
if it is gamma use lead
I think it's 6/8, you multiply by 2. 3/4 x 2 = 6/8.
Answer:
I am very confused what your question is.
Explanation:
please clarify
