Physics · JEE | THERMAL PROPERTIES OF MATTER
हिन्दीGiven below are two statements: Statement I: Two steel rails fixed at their outer ends in contact at their inner ends can experience huge compressive thermal forces capable of bending the rails when temperature increases. Statement II: The specific heat capacity of water is the lowest among common substances, making it warm up and cool down extremely rapidly. In the light of the above statements, choose the most appropriate answer from the options given below:
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Correct answer · Option A
Statement I is correct but Statement II is incorrect.
Explanation
Thermal stress can create forces on the order of \( 10^5\text{ N} \) capable of bending rails (Statement I correct). Water has the highest specific heat capacity, not lowest (Statement II incorrect).