SATHEE: Optics Question 1036

Optics Question 1036

Question: Two coherent sources of intensities, I1 and I2 produce an interference pattern. The maximum intensity in the interference pattern will be

[UPSEAT 2001; MP PET 2001]

Options:

A) I1 + I2

B) $I_{1}^{2} + I_{2}^{2}$

C) (I1 + I2)2

D) ${(\sqrt{I_{1}} + \sqrt{I_{2}})}^{2}$

Show Answer

Answer:

Correct Answer: D

Solution:

Resultant intensity $I_{R} = I_{1} + I_{2} + 2 \sqrt{I_{1} I_{2}} \cos φ$

For maximum $I_{R},$

$φ = 0^{o}$

Therefore $I_{R} = I_{1} + I_{2} + 2 \sqrt{I_{1} I_{2}} = {(\sqrt{I_{1}} + \sqrt{I_{2}})}^{2}$

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Optics Question 1036

Question: Two coherent sources of intensities, I1 and I2 produce an interference pattern. The maximum intensity in the interference pattern will be

Options:

Answer:

Solution:

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