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Which of the following statement is/are true?
I. In solids, generally, the heat is transferred by conduction.
II. No medium is required for the transfer of heat by radiation.
  • a)
    Both I and II
  • b)
    Only I
  • c)
    Neither I nor II
  • d)
    Only II
  • e)
    None of the above/ More than one of the above
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
Which of the following statement is/are true?I. In solids, generally, ...
Methods of Heat Transfer:
Conduction: 
  • The heat transfer through direct physical contact is known as conduction.
  • Heat transferred from the electric burner of a stove to the bottom of a pan is transferred by conduction.
Radiation: 
  • When electromagnetic radiation is emitted or absorbed to transfer the heat or When heat is transferred in the form of electromagnetic waves is known as radiation.
  • Electromagnetic radiation includes microwaves, radio waves, infrared radiation, visible light, ultraviolet radiation, gamma rays, and X-rays.
  • The method does not require any medium so heat from the sun reaches us by this method.
Convection
  • It is heat transfer by the movement of its molecules.
  • It occurs only in fluids (liquid and gas) not in solids because solid particles can not move from one place to another.
  • For example, in a pot boiling water on the stove, or in thunderstorms, where hot air rises up to the base of the clouds.
Explanation:
  • Radiation is the only medium in which the heat transfer takes place without any medium. Medium is required in conduction and convection. 
  • In solids, generally, the heat is transferred by conduction; like a stove to pot.
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Which of the following statement is/are true?I. In solids, generally, ...
Methods of Heat Transfer:
Conduction: 
  • The heat transfer through direct physical contact is known as conduction.
  • Heat transferred from the electric burner of a stove to the bottom of a pan is transferred by conduction.
Radiation: 
  • When electromagnetic radiation is emitted or absorbed to transfer the heat or When heat is transferred in the form of electromagnetic waves is known as radiation.
  • Electromagnetic radiation includes microwaves, radio waves, infrared radiation, visible light, ultraviolet radiation, gamma rays, and X-rays.
  • The method does not require any medium so heat from the sun reaches us by this method.
Convection
  • It is heat transfer by the movement of its molecules.
  • It occurs only in fluids (liquid and gas) not in solids because solid particles can not move from one place to another.
  • For example, in a pot boiling water on the stove, or in thunderstorms, where hot air rises up to the base of the clouds.
Explanation:
  • Radiation is the only medium in which the heat transfer takes place without any medium. Medium is required in conduction and convection. 
  • In solids, generally, the heat is transferred by conduction; like a stove to pot.
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Which of the following statement is/are true?I. In solids, generally, the heat is transferred by conduction.II. No medium is required for the transfer of heat by radiation.a)Both I and IIb)Only Ic)Neither I nor IId)Only IIe)None of the above/ More than one of the aboveCorrect answer is option 'A'. Can you explain this answer?
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