Physics
When a strong beam of light is passed through a colloidal solution, the light will

Be absorbed
Be scattered
Be reflected
Pass unchanged

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Physics
What is refractive index ?

It is defined as the product of speed of light in medium and in vacuum.
It is defined as the ratio of speed of light in vacuum to the speed of light in the medium.
It is defined as the ratio of speed of light in the medium to the speed of light in vacuum.
None of above

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