Question

The mass of a black hole with the same radius as the Sun is 4.7X10^35kg. How many times more massive is this black hole than the mass of the Sun (2X10^30kg)

a.5

b.160

c.10500

d. 235000

Answer 1

The correct option is: d. 235000

Step-by-step explanation:

Given: The radius of the black hole and the sun is equal

The mass of the black hole = 4.7 × 10³⁵ kg

And the mass of the Sun = 2 × 10³⁰ kg

Therefore, in order to find out how much massive is the black hole than the Sun, ratio of the mass of the black hole and the Sun is taken

⇒4.7 × 10³⁵ kg ÷ 2 × 10³⁰ kg = 2.35 × 10⁵ = 235000

Therefore, the black hole is 235000 times massive than the Sun.