Question

Match the following
1. Light year
2.Astronomical unit
3. Parsec
I. Distance from earth to a star with a parallax of 1 arc second
II. Distance between the sun and earth. It is used to measure distance within the solar system.
III. Distance that the light can travel in one year.

• A. a) 1-III, 2-II, 3-I
  
• B. b) 1-II,2-III,1-I
  
• C. c) 1-III,2-I,3-II
  
• D. d) 1-I,2-II,3-III
  

Answer 1

The correct option is A a) 1-III, 2-II, 3-I


a)
Explaination:
Light year - Distance that the light can travel in one year
Astronomical unit-Distance between the sun and earth. It is used to measure distance within the solar system
Parsec- Distance from earth to a star with a parallax of 1 arc second