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Heat and Thermodynamics — Physics STD 11 — Question

Tamilnadu BoardEnglish MediumSTD 11PhysicsHeat and Thermodynamics1 Mark
MCQ
Density of water is maximum at the temperature of
  • A
    32°F
  • ✓
    39.2°F
  • C
    42°F
  • D
    40°F
✓

Answer

Correct option: B.
39.2°F
39.2°F
Solution :
The density of water is maximum at $4^{\circ} C$. Let $F$ be the corresponding temperature on the Fahrenheit scale. Then using the equation$\frac{ F -32}{9}=\frac{ C }{5}=\frac{4}{5} \Rightarrow F =39.2^{\circ} F$

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