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10-1.Thermometry, Thermal Expansion and Calorimetry question bank (Physics)

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Q1.

$A$ clock pendulum having a coefficient of linear expansion $\alpha = 9 \times 10^{-7} /^{\circ}C$ has a period of $0.5 \ s$ at $20^{\circ}C$. If the clock is used in a climate where the temperature is $30^{\circ}C$,how much time does the clock lose in each oscillation? (Assume $g$ is constant)

(A)

$2.5 \times 10^{-7} \ s$

(B)

$5 \times 10^{-7} \ s$

(C)

$1.125 \times 10^{-6} \ s$

(D)

$2.25 \times 10^{-6} \ s$

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Q2.

The volume of a metal sphere increases by $0.33 \%$ when its temperature is raised by $50^{\circ} C$. The coefficient of linear expansion of the metal is

(A)

$2.2 \times 10^{-5} /{ }^{\circ} C$

(B)

$6.6 \times 10^{-5} /{ }^{\circ} C$

(C)

$13.2 \times 10^{-5} /{ }^{\circ} C$

(D)

$19.8 \times 10^{-5} /{ }^{\circ} C$

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