SAMPLE QUESTIONS
1. A glass cylinder contains m
_{0} = 100g of mercury at a temperature of t
_{0} = 0
^{0}C . When temperature becomes t
_{1} = 20
^{0}C the cylinder contains m
_{1} = 99.7 g of mercury . The coefficient of volume expansion of mercury Î³
_{He} = 18 x 10
^{-5}/
^{0}C. Assume that the temperature of the mercury is equal to that of the cylinder. The coefficient of linear expansion of glass Î± is
a) $10^{-5}/^{0}C$
b) $2 \times 10^{-5}/^{0}C$
c) $3 \times 10^{-5}/^{0}C$
d) $6 \times 10^{-5}/^{0}C$
2. A steel ball of mass m
_{1} = 1kg moving with velocity 50m/s collides with another ball of mass m
_{2} = 200g lying on the ground. During the collision their internal energies change equally and T
_{1} and T
_{2} are the rise in temperature of masses m
_{1} and m
_{2}, respectively. If specific heat of steel is 0.105 and J = 4.18 J/cal, then
a) T1 = 7.1
^{0}C and T2 = 1.47
^{0}C
b) T1 = 1.47
^{0}C and T2 = 7.1
^{0}C
c) T1 = 3.4K and T2 = 17.0K
d) T1 = 7.1K and T2 = 1.4 K