Light from two coherent sources of same amplitude A and wavelength - illuminates the screen- The intensity of central maximum is I 0- If the source were incoherent- the intensity at the same point will be-A- 4 I 0B- I 0 - 2C- I 0D- 2 I 0

The correct option is B Io /2 For coherent source, amplitudes are added. Hence, Io a(A + A)2. For incoherent sources intensity is added. That is: I a (A2 ...

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Standard XII

Chemistry

Nature of Electromagnetic Radiation

Light from tw...

Question

Light from two coherent sources of same amplitude (A) and wavelength (λ) illuminates the screen. The intensity of central maximum is I₀. If the source were incoherent, the intensity at the same point will be"=:

4 I_o

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I_o/2

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I_o

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2 I_o

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Solution

The correct option is B
I_o/2

For coherent source, amplitudes are added.

Hence, I_oa(A + A)².

For incoherent sources intensity is added. That is:

I a (A² + A²) = 2A².

Hence, I_o= 2I

Or, I - I_o/2

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Light from two coherent sources of same amplitude (A) and wavelength (λ) illuminates the screen. The intensity of central maximum is I0. If the source were incoherent, the intensity at the same point will be"=:

The correct option is B Io /2 For coherent source, amplitudes are added. Hence, Io a(A + A)2. For incoherent sources intensity is added. That is: I a (A2 + A2) = 2A2. Hence, Io= 2I Or, I - Io/2

Light from two coherent sources of same amplitude (A) and wavelength (λ) illuminates the screen. The intensity of central maximum is I₀. If the source were incoherent, the intensity at the same point will be"=:

The correct option is B
I_o/2

For coherent source, amplitudes are added.

Hence, I_oa(A + A)².

For incoherent sources intensity is added. That is:

I a (A² + A²) = 2A².

Hence, I_o= 2I

Or, I - I_o/2