Twinkling of stars in clear sky during nighttime can be explained with
Detailed Explanation:
Stellar twinkling (or scintillation) occurs because starlight passes through Earth's atmosphere with continuously varying refractive index due to turbulent air layers of different temperatures and densities. This causes the light path to bend unpredictably, making stars appear to twinkle.
Reflection involves bouncing back of light, polarization relates to light wave orientation, and interference involves superposition of waves—none explain atmospheric twinkling.
Therefore, refraction of light is the correct physical phenomenon, making Option 1 the correct answer.
Question 10 of 11 Light and Optics
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