RRB Technician Grade 3 previous year question
A constant force of 21 N moves a body through 3 m in its own direction. Work done is ________.
Asked in RRB Technician Grade 3 (10 Mar 2026 Shift 1) · Science
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Correct answer: (B) 63 J
Work done = Force × displacement = 21 N × 3 m = 63 J, since the force and displacement are in the same direction.
हिंदी में प्रश्न
एक नियत बल 21 N किसी पिंड को अपनी दिशा में 3 m तक गतिमान करता है। किया गया कार्य ________ है।
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उत्तर और व्याख्या देखें
सही उत्तर: (B) 7 J
कार्य = बल × विस्थापन = 21 न्यूटन × 3 मीटर = 63 जूल, क्योंकि बल और विस्थापन एक ही दिशा में हैं।
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