ScienceThe Human Eye and the Colourful WorldEnglish Medium 150 questions
Practice questions (150)
Question 1 of 150
The twinkling effect of a star is directly caused by starlight entering the eye
○ the star's actual physical pulsing every second
fluctuation in the star's apparent position and the resulting flicker in the amount of
○ the Moon periodically blocking the star
○ clouds passing in front of the star only
Show explanation
The chapter explains that as the star's apparent position fluctuates due to atmospheric refraction, the amount of light entering the eye flickers, causing the twinkling effect. — Examisthan.com
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