MCQOPTIONS
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MCQOPTIONS
| 1. |
A steel ring of radius r and cross-section area 'A? is fitted on to a wooden disc of radius R(R > r). If Young's modulus be E, then the force with which the steel ring is expanded is |
| A. | \[AE\frac{R}{r}\] |
| B. | \[AE\left( \frac{R-r}{r} \right)\] |
| C. | \[\frac{E}{A}\left( \frac{R-r}{A} \right)\] |
| D. | \[\frac{Er}{Ar}\] |
| Answer» C. \[\frac{E}{A}\left( \frac{R-r}{A} \right)\] | |