01 In pencil drawing, when does a lost edge occur?
Answer and explanation
Correct answer: A. जब वस्तु और पृष्ठभूमि के मान इतने समान हों कि सीमा विलीन लगे
Explanation: A lost edge occurs when the value, colour, or tone of an object approaches that of the adjacent background, causing the boundary to merge visually instead of remaining sharply outlined. Option A states this condition precisely. Lost edges can make forms recede and help direct attention toward sharper found edges. A thick outline usually creates a hard edge, while eraser use or horizontal lines does not define the concept.