Physics · Simple Machines
बल संवर्धन (force amplification) के लिए मुख्य रूप से उपयोग किए जाने वाले उपकरण का नाम क्या है?
- 1पेचकश (Screw driver)
- 2एलन की (Allen key)
- 3पहिया (Wheel)
- 4लीवर (Lever)✓
सही उत्तर देखें
लीवर (Lever)
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