The coefficient of volumetric expansion of mercury is 18 × 10–5/ºC. A thermometer bulb has a volume 10–6 m 3 and cross section of stem is 0.004 cm2. Assuming that bulb is filled with mercury at 0ºC then the length of the mercury column at 100ºC is
Text Solution
Verified by ExpertsThe correct answer is:
D
V = V 0 (1 + γ γ Δ Δ θ θ ) ⇒ ⇒ Change in volume
⇒ ⇒ Δ Δ l = 
= 
= 45 × 10 –3 m = 4.5 cm
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