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Young’s modulus of steel is 19× 1010 N/m2. Express it in dynes cm2. Here dynes are the C.G.S unit of force.

CLASS - XI PHYSICS (Physical World & Measurement)



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1N = 100000 dynes = 10⁵ dynes
1m² = 10000 cm² = 10⁴ cm²

1N/m² = 10⁹ dynes/cm²
So 19×10¹° N/m² = 19×10¹°×10⁹ = 1.9×10²°dynes/cm²
2 5 2
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