Twinkling of stars is caused by ?
Correct answer: C. refraction of light
- A. Reflection of light
- B. Polarization of light
- C. refraction of light
- D. Interference of light
- E. None of these
Explanation
Starlight is repeatedly refracted by moving layers of Earth's atmosphere, making the star's apparent brightness and position fluctuate. This atmospheric refraction produces twinkling, unlike reflection or polarization.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
About Astronomy and Space
Astronomy covers the structure and motions of the solar system, planets, satellites, comets, asteroids and meteoroids, together with gravity, eclipses, seasons and phases of the Moon. It also introduces stars, galaxies, nebulae, black holes, space telescopes and satellites, while distinguishing rotation from revolution and meteors from meteorites.
Practise Astronomy and Space
286 free Astronomy and Space MCQs from Everyday Science, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Everyday Science questions like this
Everyday Science is on 40 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Astronomy and Space questions
The biggest planet in our solar system is___________?
Which month of calendar year can lack a new moon?
Which planet is known for its beautiful rings?
Parsec is a unit of ___________?
Where do most of Asteroids lie?
The position of earth in its orbit, when it is at its greatest distance from the sun causing northern summer is called ___________?