Difficulty: Easy
Correct Answer: West
Explanation:
Introduction / Context:
This is a pure turning direction question without any distances or final position calculation. It tests whether the student correctly understands how left and right turns change orientation when the initial facing direction is not north. Such questions are simple but often cause mistakes if candidates try to visualise turns without a clear mental compass.
Given Data / Assumptions:
Concept / Approach:
We focus solely on orientation changes. When facing west, the left side is towards the south and the right side is towards the north. From the new south facing orientation, we interpret a right turn as a rotation towards the west. Tracking these two turns in sequence lets us deduce Navjot's final facing direction, independent of how far he travels along each leg.
Step-by-Step Solution:
Step 1: Initially Navjot is facing west.Step 2: From west, a left turn means turning towards the south because the left side of someone facing west points south.Step 3: He then walks in that southward direction for some distance.Step 4: Now he is facing south. From south, a right turn means turning towards the west.Step 5: Therefore, after the left and right turns, Navjot is again facing west.
Verification / Alternative check:
Another way to see this is to imagine a person standing on a sheet of paper labelled with the four cardinal directions. Mark an arrow pointing towards west, then rotate it 90 degrees anticlockwise to point towards south, and then rotate it 90 degrees clockwise to return it to west. The final orientation matches the original one, confirming that the sequence left then right from west leads back to west.
Why Other Options Are Wrong:
Option A (South) would be the direction if Navjot stopped after the first left turn and did not take the subsequent right turn. Option B (North) never occurs in the sequence of turns described. Option D (East) is the opposite of the initial direction and would require two left or two right turns from west in succession. The only correct option that matches the actual final facing direction is West.
Common Pitfalls:
Students sometimes imagine left and right turns relative to a fixed north rather than relative to the person's current orientation, which leads to incorrect answers. A good habit is to mentally stand in the given direction yourself and then simulate turning left or right from that orientation. Doing this for each turn step by step avoids mixing up directions.
Final Answer:
After starting towards the west, turning left, and then turning right, Navjot finally faces west, so the correct option is “West”.
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