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Q. |
A solid ball of metal has a spherical cavity inside it. When the ball is heated the volume of the cavity will - |
A. | increase |
B. | decrease |
C. | remain unaffected |
D. | have its shape changed |
Answer» A. increase | |
Explanation: The metal ball can be considered to be made up of several layers of thinner ones. On heating each of these layers will increase in radius. |
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