Explain the advantages of a reflecting telescope compared to a refracting telescope
Mirrors can be made much larger than lenses (meters compared to around 1m max). Mirrors do not produce chromatic aberration. Mirror glass does not need to be as high quality as lens glass. Mirrors produce less circular aberration than lenses
Related Physics A Level answers
All answers ▸How can an object be accelerating when it's velocity is constant, and how does centripetal acceleration work.
Why does an ice skater spin faster when they hold in their arms?
A pellet of mass 8.8 g embeds itself in a wooden block of 450 g which is suspended by a light in-extensible string. After the collision the block reaches a max height of 0.63 m. Calculate the initial velocity of the pellet.
Explain, using appropriate laws of motion, why the air exerts a force on the engine in the forward direction.