UPSC Exam  >  UPSC Questions  >  Which of the following phenomena are due to r... Start Learning for Free
Which of the following phenomena are due to refraction of light?
1. A straw appearing to be bent when submerged in a glass of liquid.
2. A swimming pool appearing shallower than it actually is.
3. The stars appear to be twinkling in the night.
Select the correct answer using the code given below.
  • a)
    1 and 2 only
  • b)
    2 and 3 only
  • c)
    1 and 3 only
  • d)
    1, 2 and 3
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
Which of the following phenomena are due to refraction of light?1. A s...
Refraction is the bending of a wave when it enters a medium where its speed is different. The refraction of light when it passes from a fast medium to a slow medium bends the light ray toward the normal to the boundary between the two media. The amount of bending depends on the indices of refraction of the two media. Some of the common examples are:
  • A straw in a glass with water looks bent or broken.
  • A swimming pool appears shallower than it actually is. This is because the light from the pool is refracted away from the normal when moving from water to the air.
  • The setting sun looks oval in shape because the light from the sun is refracted at a different rate when passes through the atmosphere.
  • The light of stars is refracted when passes through the different region in the atmosphere. The angle of refraction varies a little from time to time. As a result, the stars look twinkling.
View all questions of this test
Most Upvoted Answer
Which of the following phenomena are due to refraction of light?1. A s...
Refraction of Light

1. Straw appearing bent in a glass of liquid:
- When light passes from air to a denser medium like water, it changes its speed and direction, causing refraction.
- This change in direction makes the straw appear bent at the point where it enters the liquid.

2. Swimming pool appearing shallower:
- When light enters the water of the swimming pool from the air, it undergoes refraction.
- This refraction makes the bottom of the pool appear closer to the surface than it actually is, giving the illusion of a shallower depth.

3. Stars appear to be twinkling:
- The twinkling of stars is also due to the refraction of light as it passes through the Earth's atmosphere.
- The varying density and temperature of air layers cause the light from stars to bend slightly, creating the twinkling effect.
Therefore, all three phenomena mentioned in the question are a result of the refraction of light.
Explore Courses for UPSC exam

Top Courses for UPSC

Which of the following phenomena are due to refraction of light?1. A straw appearing to be bent when submerged in a glass of liquid.2. A swimming pool appearing shallower than it actually is.3. The stars appear to be twinkling in the night.Select the correct answer using the code given below.a)1 and 2 onlyb)2 and 3 onlyc)1 and 3 onlyd)1, 2 and 3Correct answer is option 'D'. Can you explain this answer?
Question Description
Which of the following phenomena are due to refraction of light?1. A straw appearing to be bent when submerged in a glass of liquid.2. A swimming pool appearing shallower than it actually is.3. The stars appear to be twinkling in the night.Select the correct answer using the code given below.a)1 and 2 onlyb)2 and 3 onlyc)1 and 3 onlyd)1, 2 and 3Correct answer is option 'D'. Can you explain this answer? for UPSC 2025 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about Which of the following phenomena are due to refraction of light?1. A straw appearing to be bent when submerged in a glass of liquid.2. A swimming pool appearing shallower than it actually is.3. The stars appear to be twinkling in the night.Select the correct answer using the code given below.a)1 and 2 onlyb)2 and 3 onlyc)1 and 3 onlyd)1, 2 and 3Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for UPSC 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following phenomena are due to refraction of light?1. A straw appearing to be bent when submerged in a glass of liquid.2. A swimming pool appearing shallower than it actually is.3. The stars appear to be twinkling in the night.Select the correct answer using the code given below.a)1 and 2 onlyb)2 and 3 onlyc)1 and 3 onlyd)1, 2 and 3Correct answer is option 'D'. Can you explain this answer?.
Solutions for Which of the following phenomena are due to refraction of light?1. A straw appearing to be bent when submerged in a glass of liquid.2. A swimming pool appearing shallower than it actually is.3. The stars appear to be twinkling in the night.Select the correct answer using the code given below.a)1 and 2 onlyb)2 and 3 onlyc)1 and 3 onlyd)1, 2 and 3Correct answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for UPSC. Download more important topics, notes, lectures and mock test series for UPSC Exam by signing up for free.
Here you can find the meaning of Which of the following phenomena are due to refraction of light?1. A straw appearing to be bent when submerged in a glass of liquid.2. A swimming pool appearing shallower than it actually is.3. The stars appear to be twinkling in the night.Select the correct answer using the code given below.a)1 and 2 onlyb)2 and 3 onlyc)1 and 3 onlyd)1, 2 and 3Correct answer is option 'D'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of Which of the following phenomena are due to refraction of light?1. A straw appearing to be bent when submerged in a glass of liquid.2. A swimming pool appearing shallower than it actually is.3. The stars appear to be twinkling in the night.Select the correct answer using the code given below.a)1 and 2 onlyb)2 and 3 onlyc)1 and 3 onlyd)1, 2 and 3Correct answer is option 'D'. Can you explain this answer?, a detailed solution for Which of the following phenomena are due to refraction of light?1. A straw appearing to be bent when submerged in a glass of liquid.2. A swimming pool appearing shallower than it actually is.3. The stars appear to be twinkling in the night.Select the correct answer using the code given below.a)1 and 2 onlyb)2 and 3 onlyc)1 and 3 onlyd)1, 2 and 3Correct answer is option 'D'. Can you explain this answer? has been provided alongside types of Which of the following phenomena are due to refraction of light?1. A straw appearing to be bent when submerged in a glass of liquid.2. A swimming pool appearing shallower than it actually is.3. The stars appear to be twinkling in the night.Select the correct answer using the code given below.a)1 and 2 onlyb)2 and 3 onlyc)1 and 3 onlyd)1, 2 and 3Correct answer is option 'D'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice Which of the following phenomena are due to refraction of light?1. A straw appearing to be bent when submerged in a glass of liquid.2. A swimming pool appearing shallower than it actually is.3. The stars appear to be twinkling in the night.Select the correct answer using the code given below.a)1 and 2 onlyb)2 and 3 onlyc)1 and 3 onlyd)1, 2 and 3Correct answer is option 'D'. Can you explain this answer? tests, examples and also practice UPSC tests.
Explore Courses for UPSC exam

Top Courses for UPSC

Explore Courses
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev