Question

How far is the earth from the sun?

a) 1 AU
b) 1 parsec
c) 1 kiloparsec
d) 1 lightyear

Answer 1

1 AU

Step-by-step explanation:

Distance between Sun and Earth is given as

`r = 1.5 * 10^(11) m`

Now this new value of distance is taken as reference and defined in terms of new units

This new unit is known as AU = Astronomical Unit

So distance between Sun and Earth is equal to 1 AU which means it is

`1 AU = 1.5 * 10^(11) m`