defence exam Army Havildar SAC Mock Test Series 2025 Physics Work Power and Energy Power

40 किलो वजनाची मुलगी 50 सेकंदात सरासरी 20 सेमी उंचीच्या 50 पायऱ्या चढते. मुलीची शक्ती शोधा. (g = 10 \(m\ s^{-2}\) )

1
50 W
2
50 × 20 W
3
80 W
4
50 × 2 W
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