The Sun's life expectancy on the main sequence is about years

PHYSICS · Single correct · A Level · Physics · Astrophysics · Astrophysics

Problem

The Sun's life expectancy on the main sequence is about

10^{10}

years. Which of the following is the best estimate of the lifetime of a star on the main sequence of mass 100 times that of the Sun? (1)

10^5

years (2)

10^8

years (3)

10^{12}

years (4)

10^{15}

years