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 ▸A car of mass 800 kg is accelerated horizontally by constant net force of 1920 N for 9 s. It then breaks for 2 s, but drives off a 5 m high cliff. If μ = 0.85, what is the total horizontal distance travelled by car and its velocity? Ignore air resistance.
Derive the kinetic theory equation pV=Nm/3(crms2) for an ideal gas.
Derive an expression to show that for satellites in a circular orbit T^2 ∝ r^3 where T is the period of orbit and r is the radius of the orbit.
How can I measure the orbital period of a satellite around Earth?