Directions: The problem figure shows the top view of objects. Looking in the direction of arrow, identify the correct elevation, from amongst the answer figures.
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In an elevation, an object nearer to the viewer hides the part of any object behind it, so only the front object's complete outline is drawn.
The top view shows six rectangular blocks, and the viewer looks from the bottom of the plan (in the direction of the arrow) towards the top. Blocks nearest the viewer are the tall narrow block at the lower left of the plan, the small square block and the square block on the right; the long wide block at the top of the plan is the farthest. The block at the extreme left of the plan is nearer to the viewer than the block just behind it, so in the elevation its outline must be drawn complete and the farther block's left edge must be hidden behind it. Option (1) wrongly draws the farther block's edge through the front block. Similarly, the square block on the right is nearer than the rectangular block behind it on the extreme right, so its outline must be complete while the rear block's left edge stays hidden. Option (2) wrongly shows the rear block's edge through the front block. Option (4) introduces an extra vertical line behind the long block that corresponds to no edge visible in the plan. Only option (3) shows the blocks with the correct left-to-right positions, the correct overlapping and hidden edges. Answer: (3) the elevation shown in the third answer figure
