Statement-I: Diamond is very bright. Statement-II: Diamond has very lo

Statement-I: Diamond is very bright.
Statement-II: Diamond has very low refractive index.

[amp_mcq option1=”Both the statements are individually true and Statement II is the correct explanation of Statement I” option2=”Both the statements are individually true but Statement II is not the correct explanation of Statement I” option3=”Statement I is true but Statement II is false” option4=”Statement I is false but Statement II is true” correct=”option3″]

This question was previously asked in

UPSC NDA-1 – 2015

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Statement I is true, but Statement II is false.

Statement I is true because diamond is known for its exceptional brilliance and sparkle, which makes it a highly valued gemstone. Statement II is false; diamond actually has a very *high* refractive index (approximately 2.42), one of the highest among naturally occurring transparent minerals.

The brilliance and fire of a diamond are primarily due to its high refractive index and high dispersion (the ability to split white light into its constituent colours). The high refractive index causes significant bending of light entering the stone and allows for high internal reflection, leading to light bouncing around inside before exiting, creating sparkle. If diamond had a *low* refractive index, light would pass through with less bending and reflection, resulting in significantly less brilliance.

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