Intensity of light ray in a direction after scattering by small particles (smaller than wavelength):

decreases.

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remains the same.

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increases.

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may increase or decrease depending on the medium in the corresponding direction.

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Solution

The correct option is A decreases.
After scattering of light by small particles, it spreads in all directions. Hence, the intensity of the scattered light in a direction is smaller then the intensity of the incident light wave.

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