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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)


We all know that 
1 newton=100000 dynes =10 to the power 5
1 meter square=10000cm square=10 to the power 4 cm square
1n/msquare=10 to the power9 dynes/cm square

so 19*10 to the power10*10 to the power 9=1.9*10 to the power 20dynes/cm square
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