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JEE PHYSICS MCQ: THERMAL PROPERTIES OF MATTER
1
Medium
1 of 1
Understanding
+4 | -1
Take a test rube nearly filled with water and put in the bottom a piece of paraffin wax, round which a piece of thick copper wire has been wound so that wax remains at the bottom. Temperature required for melting wax is .
Statement-1: Heat the water at top where it will be seen to boil vigorously without melting wax.
Statement-2: Convection currents are not set-up when water column is heated from top and water is poor conductor of heat.
Statement-1: Heat the water at top where it will be seen to boil vigorously without melting wax.
Statement-2: Convection currents are not set-up when water column is heated from top and water is poor conductor of heat.
View answer and explanation
Correct option: A
Statement-1 is true, Statement-2 is true, Statement-2 is the correct explanation for Statement-1
Option A (Statement-1 is true, Statement-2 is true, Statement-2 is the correct explanation for Statement-1) is correct because heating from the top doesn't establish convection currents, and water is a poor heat conductor.
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