(a) State the condition under which a large magnification can be achieved in an
(b) Give two reasons to explain why a reflection telescope is preferred over a
refracting telescope. 2 marks
(b) Any two
(i) No chromatic aberration.
(ii) No spherical aberration.
(iii) Mechanical advantage - low weight, easier to support.
(iv) Mirrors are easy to prepare. + marks
(v) More economical