Consider the following statements:
- Prenumbra is the innermost and the darkest part of a shadow, where the light source is completely blocked by the occluding body.
- 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?
-
Only 1
-
Only 2
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Both 1 and 2
-
Neither 1 nor 2
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.