Suppose you measure the parallax angle for a particular star to be 0.1 arcsecond. the distance to this star is
a) 10 light-years. b) 10 parsecs. c) 0.1 light-year. d) 0.1 parsec. e) impossible to determine.

B) 10 parsecs

Explanation:

The distance of a star measured with the parallax method is given by:

where

d is the distance, in Parsec

is the parallax angle, in arcseconds

For the star in the problem, the parallax angle is

therefore, the distance of the star is

so, 10 parsecs.

a.

explanation:

a displacement distance is size of displ