A work of J is done on a wire of length 50 cm and area of cross-section 0.5 . If the Young’s modulus of the material of the wire is , then the wire must be |
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a) |
Elongated to 50.1414 cm |
b) |
Contracted by 2.0 mm |

c) |
Stretched by 0.707 mm |
d) |
Of length changed to 49.293 cm |

A work of J is done on a wire of length 50 cm and area of cross-section 0.5 . If the Young’s modulus of the material of the wire is , then the wire must be |
|||

a) |
Elongated to 50.1414 cm |
b) |
Contracted by 2.0 mm |

c) |
Stretched by 0.707 mm |
d) |
Of length changed to 49.293 cm |

1 Answer

127 votes

The work done by wire is stored as potential energy in the wire Given, Strain ? (stretched) |

127 votes

127