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Heat — Science STD 7 — Question

Gujarat BoardEnglish MediumSTD 7ScienceHeat1 Mark
MCQ
Which Type Of Heat Transfer Is Actually Minimized When Using A ThermFlask?
  • A
    Conduction.
  • B
    Convection.
  • ✓
    Radiation.
  • D
    All the above.
✓

Answer

Correct option: C.
Radiation.
Thermo flask is a special kind of class for keeping liquids. It consists of a double walled glass cylinder. A vacuum is created in the space between the two walls. Hence, radiation is actually minimized. Hence,

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