Question

Which option shows the correct perspective drawing of the object when it is viewed from the direction as shown on the left?

• A. Fig A
• B. Fig B
• C. Fig C
• D. Fig D

Hint:

Align your body with the arrow in the Top View. Determine what lies on your left hand and what lies on your right hand. This simple trick eliminates half of the incorrect mirrored options immediately.

Answer 1

The Correct Option is B

Step 1: Understanding the Question:
This question belongs to the topic of

Perspective Projection and Viewpoint Translation.
We are given a Top View of a stepped 3D block and an arrow indicating the position and direction of the observer. We must select the correct 3D perspective drawing corresponding to this specific viewpoint.

Step 2: Key Formula or Approach:
We use spatial layout mapping from the observer's line of sight:

• Identify which sections are tall and which are low.

• Project these sections onto the observer's left-to-right field of view.

• The observer is looking from the bottom-left corner, straight along the long axis of the block.


Step 3: Detailed Explanation:

• From the Top View, we observe:
- The block is divided into a taller L-shaped section on the left and back, and a lower rectangular step on the front-right.

• From the observer's viewpoint (looking up-right from the bottom-left corner):
- The tall section forms a vertical wall on the observer's immediate left.
- The lower step is positioned on the observer's right.
- The front face of the tall section is visible, and the left side wall is highly prominent.

• Let us analyze the options:
- Option A: Shows the tall wall on the right and the step on the left. This represents the view from the opposite side.
- Option B: Correctly places the tall L-shaped wall on the left, with the horizontal lower step situated on the right. The perspective lines converge correctly away from the viewer.
- Option C: Places the step at the very front and the tall wall at the back, which is incorrect.
- Option D: Shows a reversed block layout.


Step 4: Final Answer:
Option (B) is the correct perspective view.