### Physics 9 Chapter 8 - Thermal Properties of Matter -27 1.    What is the coefficient of linear thermal expansion of platinum? a) 8.6 x 10-5 b) 2.27 x 10-5 c) 2.01 x 10-5 d) 1.0 x 10-5 2.    What is ‘α’ in the formula “L = Lo (1 + α ∆T)” called? a) Coefficient of volume thermal expansion of liquids b) Coefficient of volume thermal expansion of solids c) Coefficient of linear thermal expansion of liquids d) Coefficient of linear thermal expansion of solids 3.    What is the coefficient of linear thermal expansion of tungsten? a) 0.4 x 10-5 b) 2.27 x 10-5 c) 1.0 x 10-5 d) 2.01 x 10-5 4.    What is the fractional increase in length of a substance per Kelvin rise in temperature? a) Coefficient of volume thermal expansion of liquids b) Coefficient of linear thermal expansion of solids c) Coefficient of linear thermal expansion of liquids d) Coefficient of volume thermal expansion of solids 5.    What is the coefficient of linear thermal expansion of aluminium? a) 1.0 x 10-5 b) 2.01 x 10-5 c) 2.27 x 10-5 d) 2.4 x 10-5 6.    What is the coefficient of linear thermal expansion of ordinary glass? a) 2.27 x 10-5 b) 0.9 x 10-5 c) 1.0 x 10-5 d) 2.01 x 10-5 7.    Which of the following material has large value of temperature coefficient of linear expansion? a) Steel b) Gold c) Brass d) Aluminium 8.    What is the coefficient of linear thermal expansion of Pyrex glass? a) 0.4 x 10-5 b) 1.0 x 10-5 c) 2.27 x 10-5 d) 2.01 x 10-5 9.    Which of the following formula is correct about ‘α’? a) Formula: α = ∆T / (Lo ∆L) b) Formula: α = ∆L x (Lo ∆T) c) Formula: α = ∆L / (Lo ∆T) d) Formula: α = ∆T x (Lo ∆L) 10.    What is the coefficient of linear thermal expansion of concrete? a) 2.27 x 10-5 b) 1.2 x 10-5 c) 2.01 x 10-5 d) 1.0 x 10-5

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