Question

he intensity ratio of two waves is 1 : 16. The ratio of their amplitudes is

• A. 1 : 16
• B. 1 : 4
• C. 4 : 1
• D. 2 : 1

Answer 1

Answer: (B)

1 : 4

Answer 2

$\frac{I_{1}}{I_{2}} = \left( \frac{a_{1}}{a_{2}} \right)^{2} = \frac{1}{16} \Rightarrow \frac{a_{1}}{a_{2}} = \frac{1}{4}$