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.


B

Physics & Space Science

You might also like to view...

From hottest to coolest, the order of the spectral types of stars is ________

A) OBAGFKM B) ABCDEFG C) ABFGKMO D) OBAFGKM E) OMKGFBA

Physics & Space Science

Velma zooms past Mort at half of lightspeed. Velma observes Mort's clock to run

A) slow. B) on time. C) fast. D) None of the above.

Physics & Space Science

An object is placed 10 cm from a convex lens with a focal length of magnitude 20 cm. What is the magnification?

A) -2.0 B) 0.50 C) 1.5 D) 2.0 E) -2.5

Physics & Space Science

A meter stick is moving toward you with a speed of 0.85c. What is its length?

A) zero B) 0.47 m C) 0.53 m D) 0.74 m E) 1.0 m

Physics & Space Science