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प्रश्न
Define coefficient of linear expansion.
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उत्तर
Coefficient of Linear expansion is equal to the change in length of a rod of length 1m when its temperature rises by 1°C.
संबंधित प्रश्न
Fill in the blank:
°C is the unit of ......................
What is the difference between heat and temperature? What are their units?
A body radiates out 300 calories of heat energy. How much heat energy is radiated out by the body in joules?
Is conduction possible in vacuum?
A small gap is left between two iron rails of the railway track. Why?
One liter of mercury at 100C is heated to 300C. Find the increase in the volume of mercury. The coefficient of cubical expansion of mercury is 1.8 X 10-4 0C-1.
Convert the following temperature into Fahrenheit scale:
850C.
The following figure shows a rectangular box with two tubes P and Q at the top. A burning candle R is placed under the tube P. The candle burns brightly.
Explain:
(i) How is the air in the box circulating?
(ii) What will happen if the opening Q is closed?
