Multiple choice

Consider the following statements:

  1. Prenumbra is the innermost and the darkest part of a shadow, where the light source is completely blocked by the occluding body.
  2. The colored areas of light to the left or right of the sun at 220 distant above the horizon is called sundog.

Which of the given statements is/are incorrect?

  1. Only 1

  2. Only 2

  3. Both 1 and 2

  4. Neither 1 nor 2

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Statement 1 is incorrect. The three distinct parts of a shadow created by a light source are: (i) Umbra - The innermost and darkest part of a shadow, where the light source is completely blocked by the body. (Total eclipse) (ii) Penumbra - The region in which only a portion of the light source is observed by the body. (Partial eclipse) (iii) Antumbra - The region from which the body appears entirely contained within the disc of the light source. Statement 2 is correct. Sundogs may appear as a coloured patch of light to the left or right of the sun, and at the same distance above the horizon as the sun, and in ice halos.