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10.1, thermonetry,thermal expansion and calorimetry — Physics STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 SciencePhysics10.1, thermonetry,thermal expansion and calorimetry1 Mark
MCQ
If $H_C, H_K$ and $H_F$ are heat required to raise the temperature of one gram of water by one degree celcius, kelvin and fahrenheit temperature scales respectively then
  • A
    $H_K > H_C > H_F$
  • B
    $H_F > H_C > H_K$
  • ✓
    $H_K = H_C > H_F$
  • D
    $H_K = H_C = H_F$
✓

Answer

Correct option: C.
$H_K = H_C > H_F$
c
$H_{C}=m s \Delta \theta=m s(1)^{\circ} C$

$H_{K}=m s \Delta \theta=m s(1) K=m s(1)^{\circ} C$

$H_{F}=m s \Delta \theta=m s\left(1^{\circ} F\right)=m s(5 / 9)^{\circ} C$

$\therefore H_{C}=H_{K}>H_{F}$

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