what are the problems limiting the size of lenses for refracting telescopes. select all that apply.
1.If the lens is too big, it warps under its own weight.
2.Supporting mirrors reflect light back into the lenses, scattering it.
3.Thick lenses act like a prism and spread out the light.
4.Refracting the light on large scales is not efficient.
5.Lenses are ground too thin to effectively focus the light.
