A student starts from his house in south direction, then turns to his right, walks 2 km and turns to his left and again turns to his left and walks 2 km. He now takes 450 turns in clockwise direction and reaches his college. In which direction is his college with respect to his house? MCQ with Answer and Explanation
A student starts from his house in south direction, then turns to his right, walks 2 km and turns to his left and again turns to his left and walks 2 km. He now takes 450 turns in clockwise direction and reaches his college. In which direction is his college with respect to his house?
A. Southeast
B. South
C. North
D. Southwest
Answer: Option B
Solution (By JKSSB Mock Tests)
Walks South. Right (West) for 2km. Left (South) then Left (East) for 2km. The 2km West and 2km East cancel out, leaving him directly South of his house. The 450° CW turn (which is one full 360° circle + 90°) only changes the direction he is *facing*, not his geographical position. He remains South of his house.
Explanation:
Total east = 3+12=15, north 4 -> √(15²+4²)=√241 ≈ 15.52, not 13. I'll do 5 east, 12 north -> 13. So: 5 m east, then 12 m north. Shortest distance 13 m. So question: A child walks 5 m east, then 12 m north. Shortest distance? 13 m.
In the morning, Shivani walks 3 m in the direction of sunrise. She takes two consecutive left turns and walks 8 m and 3 m respectively after each turn. In which direction is she now moving with respect to the starting point?
Explanation:
Sunrise is in the East. She walks 3m East. First left turn (North) for 8m. Second left turn (West) for 3m. Her East and West movements cancel out. She is exactly 8m North of her starting point.
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