Shekhar walks 10 metres towards North. Then he walks 6 metres towards South. Then he walks 3 metres towards East. How far is he from his starting point ?शेखर उत्तर दिशा की ओर 10 मीटर चलता है। फिर वह दक्षिण दिशा की ओर 6 मीटर चलता है। फिर वह पूर्व दिशा की ओर 3 मीटर चलता है। वह अपने प्रारम्भिक बिन्दु से अब कितना दूर है ?
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Correct answer: C. 5 metres5 मीटर
Explanation
Net northward displacement = 10 − 6 = 4 m; eastward displacement = 3 m. These are perpendicular, so the distance from the start = √(4² + 3²) = √25 = 5 metres.उत्तर दिशा में कुल विस्थापन = 10 − 6 = 4 मीटर; पूर्व दिशा में विस्थापन = 3 मीटर। ये परस्पर लम्बवत् हैं, अतः प्रारम्भिक बिन्दु से दूरी = √(4² + 3²) = √25 = 5 मीटर।More Reasoning & Mental Ability questions
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