Question

If the sun radiates energy at the rate of 3.6 × 10³³ ergs/sec the rate at which the sun is loosing mass is given by ______.

Options

• 4 × 10¹² gm/sec

• 8 × 10³⁴ gm/sec

• 1 × 10²³ gm/sec

• 7 × 10⁴³ gm/sec

Answer 1

If the sun radiates energy at the rate of 3.6 × 10³³ ergs/sec the rate at which the sun is loosing mass is given by 4 × 10¹² gm/sec.

Explanation:

E = mc²

3.6 × 10³³ = m(3 × 10¹⁰ (cm/s))²

m = 4 × 10¹² qm/sec