MCQOPTIONS
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| 1. |
The temperature of a wire of length 1 metre and area of cross-section \[1\,c{{m}^{2}}\] is increased from 0°C to 100°C. If the rod is not allowed to increase in length, the force required will be \[(\alpha ={{10}^{-5}}/{}^\circ C\] and \[Y={{10}^{11}}\,N/{{m}^{2}})\] [NCERT 1976; CPMT 1982, 91] |
| A. | \[{{10}^{3}}N\] |
| B. | \[{{10}^{4}}N\] |
| C. | \[{{10}^{5}}N\] |
| D. | \[{{10}^{9}}N\] |
| Answer» C. \[{{10}^{5}}N\] | |