Multiple choice

Consider the following statements:

  1. The minimum distance from the eye at which an object appears to be distinct is 25 cm.
  2. The reflecting optical coating is present on the mirrored sunglasses for the protection against the glare of sunlight.

Which of the given statements is/are correct?

  1. Only 1

  2. Only 2

  3. Both 1 and 2

  4. Neither 1 nor 2
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Statement 1 is correct. The minimum distance from the eye at which an object appears to be distinct is called least distance of distinct vision or near point, which is 25 cm from the eye. If the object is held closer to the eye than the distance the image formed will be blurred and fuzz. Statement 2 is also correct. A mirror coating reflects the sun rays, which does not get hot in sunlight and prevents the scattering of rays in the lens bulk. The reflecting optical coating is present for the protection against the glare of sunlight.

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