AIIMS 2019 Physics Total Internal Reflection MCQ Question
Assertion : Diamond glitters brilliantly. Reason : Diamond does not absorb sunlight.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Correct Answer
Detailed Explanation
Diamond glitters brilliantly primarily due to dispersion, which occurs when light enters the diamond and is separated into its constituent colors, creating a spectrum of light. This phenomenon is enhanced by the high refractive index of diamond, which causes significant bending of light rays. While total internal reflection (option A) is crucial for the sparkle effect, it is the dispersion that leads to the colorful brilliance seen in diamonds. Refraction (option B) is the bending of light as it passes through different media, and diffraction (option D) involves the bending of light around obstacles, neither of which directly contributes to the characteristic sparkle of diamonds.
Found an issue with this question?