Question

1 AU is equal to

• A. $1.5\times {10}^{11}\mathrm{m}$
• B. $1.5\times {10}^{10}\mathrm{m}$
• C. $1.5\times {10}^9\mathrm{m}$
• D. $1.5\times {10}^{-11}\mathrm{m}$

Answer 1

The correct option is A

$1.5\times {10}^{11}\mathrm{m}$

1. The average distance between the sun and earth is called an astronomical unit.
2. It is denoted by the symbol AU.
3. $1\mathrm{AU}=1.5\times {10}^{11}m.$

Hence, the correct option is (A).