Question

The star Aldebaran, otherwise known as Rōhini, has a mass of $1.16{\text{M}}_{\text{Sun}}$, where ${\text{M}}_{\text{Sun}}$ is the mass of the Sun. Express Rōhini’s mass in $\text{kg}$.

• A. $2.8\times {10}^{30}\text{kg}$
• B. $1.15\times {10}^{30}\text{kg}$
• C. $2.32\times {10}^{30}\text{kg}$
• D. $2.5\times {10}^{30}\text{kg}$

Answer 1

The correct option is C $2.32\times {10}^{30}\text{kg}$

Given:
Mass of the star Rohini, ${\text{M}}_{\text{R}}=$$1.16{\text{M}}_{\text{Sun}}$

${\text{M}}_{\text{Sun}}=2\times {10}^{30}\text{kg}$

${\text{M}}_{\text{R}}=1.16\times 2\times {10}^{30}$

$=2.32\times {10}^{30}\text{kg}$