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10-1.Thermometry, Thermal Expansion and Calorimetry
easy
જ્યારે કોપરનો બોલને ગરમ કરવામાં આવે ત્યારે શેમાંથી સૌથી વધુ પ્રતિશત વધારો થશે?
A
વ્યાસ
B
ક્ષેત્રફળ
C
કદ
D
ઘનતા
Solution
The coefficient of volume expansion $(\gamma)$ is twice as that of area expansion ( $\beta$ ) and thrice as that of linear expansion ( $\alpha$ ). Hence when a copper ball is heated the maximum percentage increase will be of the volume. i.e., $\gamma=2 \beta$ and $\gamma=3 \alpha$
$(a)$ Increase in diameter is linear expansion.
$(b)$ Increase in surface area is area expansion.
$(d)$ Density decreases with increase in temperature.
Standard 11
Physics
