Multiple choice

Consider the following statements:

  1. The least distance of distinct vision for a healthy human eye is 50 cm.
  2. The time difference between actual sunset and the apparent sunset is about 2 minutes.

Which of the following statements is/are correct?

  1. Only (1)

  2. Only (2)

  3. Both (1) & (2)

  4. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
  1. Statement (1) is wrong. The least distance of distinct vision for a healthy human eye is 25 cm.
    1. Statement (2) is correct. The time difference between actual sunset and apparent is 2 minutes. This happens due to atmospheric refraction.

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