The light waves from two coherent sources have the same intensity $I_{1} = I_{2} = I_{0}$ . In an interference pattern, the intensity of light at minima is zero. What will be the intensity of light at maxima?

5 I_{0}

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I_{0}

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2 I_{0}

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4 I_{0}

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Solution

The correct option is D $4 I_{0}$
The intensity of light at maxima is :
$I_{m a x} = (I_{1} + I_{2})^{2}$
$I_{m a x} = (I_{o} + I_{o})^{2}$
$\Rightarrow I_{m a x} = 4 I_{o}$

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The light waves from two coherent sources have the same intensity I1=I2=I0. In an interference pattern, the intensity of light at minima is zero. What will be the intensity of light at maxima?

The correct option is D 4 I0The intensity of light at maxima is : Imax=(I1+I2)2 Imax=(Io+Io)2 ⇒Imax=4Io

The light waves from two coherent sources have the same intensity $I_{1} = I_{2} = I_{0}$ . In an interference pattern, the intensity of light at minima is zero. What will be the intensity of light at maxima?

The correct option is D $4 I_{0}$
The intensity of light at maxima is :
$I_{m a x} = (I_{1} + I_{2})^{2}$
$I_{m a x} = (I_{o} + I_{o})^{2}$
$\Rightarrow I_{m a x} = 4 I_{o}$