Compared to Optical Telescopes, Radio Telescopes Are Built Large Because

question 91

Multiple Choice

Compared to optical telescopes, radio telescopes are built large because:

• A)they're less expensive to make than optical telescopes.
• B)radio photons don't carry much energy.
• C)atmospheric turbulence is more of a problem.
• D)radio sources are harder to find.
• E)radio waves are absorbed by the atmosphere.