What is the typical main sequence lifetime of a B-type star?
A)less than a million years
B)20 million years
C)100 million years
D)1 billion years
E)10 billion years

Question

Quizplus · Accepted Answer

B-type stars, which are very luminous and have high surface temperatures, typically have main sequence lifetimes of about 20 million years. This is due to their high mass leading to faster nuclear fusion rates in their cores compared to lower mass stars.

What Is the Typical Main Sequence Lifetime of a B-Type