Question:
The question figure shows the 3D view of an object. Identify the correct number of visible surfaces.
The question figure shows the 3D view of an object. Identify the correct number of visible surfaces.
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Trace every distinct visible planar region (horizontal tops, inclined faces and the vertical walls on both sides) and count each once.
Updated On: Nov 12, 2026
- 13
- 14
- 15
- 18
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The Correct Option is B
Solution and Explanation
Work around the object from the back to the front, counting each distinct flat region once.
The raised back slab contributes its top and the vertical faces of its two small steps on the right.
The inclined ramp at the left and the inclined wedge in the centre contribute their sloping faces and their side faces.
The inner floor and the horizontal steps add the remaining top faces, and the vertical walls of the outer body on the left and right fronts, including the central notch in the front, add the rest.
Adding all these visible surfaces gives 14.
Answer: (2) 14
The raised back slab contributes its top and the vertical faces of its two small steps on the right.
The inclined ramp at the left and the inclined wedge in the centre contribute their sloping faces and their side faces.
The inner floor and the horizontal steps add the remaining top faces, and the vertical walls of the outer body on the left and right fronts, including the central notch in the front, add the rest.
Adding all these visible surfaces gives 14.
Answer: (2) 14
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