4. Consider the following statements : (i) Source of light (ii) Translucent object (iii) Opaque object (iv) A screen The things required to observe a shadow are :

Options

A. i, ii and iv
B. i, ii and iii
C. iii, i and iv
D. All the above

Answer

option 3

Explanation

Shadows are formed when light is stopped by an object. Those materials which do not allow any light to pass through them are called opaque materials. An opaque object stops the light completely. Therefore, an opaque object is required. The shadow of an object can only be on a screen. An object forms shadow on the opposite side of the source of light. For the light to be stopped a source of light is also required.