One obvious problem
with a reflecting telescope is that the objective mirror focusses light inside
Rationalised 2023-24
Physics
246
SUMMARY
1 Reflection is governed by the equation Ði = Ðr¢  and refraction by the
Snell’s law, sini/sinr = n, where the incident ray, reflected ray, refracted
ray and normal lie in the same plane Angles of incidence, reflection
and refraction are i, r ¢ and r, respectively 2