Q. Consider the following statements about the characteristics of a shadow:

1. A shadow is virtual and erect
2. The image formed by a shadow is always the same colour as the object
3. The shadow can be smaller than, equal to, or bigger than the object
4. A shadow is always erect

Which of the above statements is / are correct?
Answer: Only 3 and 4
Notes: Statements 3 and 4 are correct: A shadow can be smaller, equal, or larger than the object and it is always erect (upright). Statement 1 is incorrect because a shadow is real, not virtual. Statement 2 is incorrect because a shadow is always black, regardless of the object's colour.