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  • Ratio of amplitude of two waves is given by 5: 1. Then the ratio of the intensities of two waves?Option: 1 25:1

Ratio of amplitude of two waves is given by 5: 1. Then the ratio of the intensities of two waves?

Option: 1

25:1


Option: 2

30:1


Option: 3

35:1


Option: 4

40:1


Answers (1)

best_answer

As we know that, 

\begin{aligned} & \frac{A_1}{A_2}=\frac{5}{1} \\ & I \propto A^2 \end{aligned}

\begin{aligned} & \frac{A_1^2}{A_2{ }^2}=\frac{I_1}{I_2} \\ & \left(\frac{5}{1}\right)^2=\frac{I_1}{I_2} \end{aligned}

\begin{aligned} &\frac{I_1}{I_2}=\frac{25}{1}\\ &I_1: I_2=25 :\mathrm{1} \end{aligned}

 

Posted by

Sanket Gandhi

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