On a summer day,a scooter rider feels
more comfortable while on the move than while at a stop lightbecause________.
an object in motion captures less
solar radiation
air is transparent to radiation and
hence it is cooler than the body
more heat is lost by convection and
radiation while in motion
air has a low specific heat and hence it is cooler
more heat is lost by convection and
radiation while in motion
●The situation corresponds to
convection and radiation when the scooter is in motion and the convective heat
transfer coefficient for convection is greater than that of free convection.
●More the air flows, more will be the
convection heat transfer. When we rise air flow is more as compared to when we
are at rest but in riding condition the heat transfer by convection is more and
rider feel comfortable in summer days
Hence, the correct option is (C).
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