Question

the process by which can transfer heat through the vacuum as well as air is : (a) conduction (b) radiation (c) convection (d) irradiation​

Answer 1

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the answer is option c

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Answer 2

The process by which can transfer heat through the vacuum as well as air is radiation.

Option: (b)

Explanation:  

• Heat transfer can take place in form of conduction ‘Convection and radiation’. Conduction and convection requires a material medium to pass heat through it.  

• As a result conduction and convection can never take place in vacuum. Radiation takes place due to long wavelength heat rays which can even pass through vacuum.  

• Hence radiation is the only form of ‘heat transfer’ which can pass through vacuum as well as through a substance like air.