Question

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> Which of the following are units of distance measurement :

1. Parsec
2. Astronomical unit
3. Light year

• A. 1 and 2 only
• B. 2 and 3 only
• C. 1 and 3 only
• D. 1, 2 and 3

Answer 1

The correct option is D 1, 2 and 3

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> Astronomical Unit is the distance between Sun and the Earth,roughly around 149.6 million km.Light year is the distance that light travels in one year, about 9.4607×1012 kilometres.Parsec, unit for expressing distances to stars and galaxies,representing the distance at which the radius of Earth's orbit subtends an angle of one second of arc.