OnlineCBT
Physics · UNITS AND MEASUREMENT
हिन्दीCalculate the approximate average mass density (in \( \text{kg m}^{-3} \)) of the Sun using mass \( M = 2.0 \times 10^{30}\text{ kg} \) and radius \( R = 7.0 \times 10^8\text{ m} \).
Correct answer · Option 1
\( 1.4 \times 10^3\text{ kg m}^{-3} \)
Explanation
\( \rho = \frac{3M}{4\pi R^3} = \frac{3 \times 2.0 \times 10^{30}}{4 \times \frac{22}{7} \times (7 \times 10^8)^3} \approx 1400\text{ kg m}^{-3} = 1.4 \times 10^3\text{ kg m}^{-3} \).
