If stellar parallax can be measured to a precision of about 0.01 arcsec using telescopes on Earth to observe stars,to what distance does this correspond in space?
A) 500 pc
B) 200 pc
C) 100 pc
D) 0.01 pc

Question

Quizplus · Accepted Answer

The distance corresponding to a parallax angle of 0.01 arcsec can be calculated using the formula d(pc) = 1 / p(arcsec), where d is the distance and p is the parallax angle. Thus, d = 1 / 0.01 = 100 pc. Therefore, choice C is the correct answer.

If Stellar Parallax Can Be Measured to a Precision of About