Correct Answer - Option 2 : 41.4%

**Concept:**

Compound interest = P × [(1 + R/100)^{n} - 1]

**Calculation:**

⇒ Let the rate of interest be R.

⇒ The amount gets doubled in two years

⇒ P × (1 + R/100)^{2} = 2P

⇒ 1 + R/100 = √2

⇒ R = 41.4%

**∴ The required result will be 41.4%.**