NEET Physics Optical Instruments MCQ Question
Which of the following combinations about refraction and optical density is correct?
Optically denser medium has a higher speed of light and bends rays towards the normal.
Optically rarer medium has a lower speed of light and bends rays away from the normal.
Mass density is always higher in optically denser mediums compared to rarer mediums.
Optical density is the ratio of the speed of light in two media, and mass density can be less in a denser medium.
Correct Answer
Detailed Explanation
Optical density is the ratio of the speed of light in two media and does not necessarily correlate with mass density. A denser medium can have a lower mass density while maintaining a higher optical density, as seen in the example of turpentine and water.
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