Suppose Your Telescope Has Perfect Mirrors and Is Limited Only

question 6

Multiple Choice

Suppose your telescope has perfect mirrors and is limited only by diffraction.If you are viewing with light of 400 nm wavelength,what diameter mirror in a space telescope would have 1.0-km resolution of objects on Mars when viewed from above the earth at a time when the Earth-Mars distance of 80 million kilometers?

• A)39 km
• B)3.9 m
• C)3.9 km
• D)39 m
• E)390 m