Statement 1: Radiation needs a medium to travel. – McqOptions

MCQOPTIONS

1.	Statement 1: Radiation needs a medium to travel.
A.
B.	True, False
C.	True, True
Answer» D.

Discussion

No Comment Found

Related MCQs

Radiation dryers use _____
In deep freezers, the walls absorb heat from food materials by _____ and keep them cool.
Statement 1: Radiation dryers are used to dry grains and reduce their moisture content before storage.Statement 2: Baking ovens are used both for making the dough and after that’s made, making biscuits by cutting them and baking them further. This entire process uses radiation.
Freezer is at -18 deg C. Will will be Radiative heat transfer if meat is at 298k, its emissivity is 0.82 and average area is 0.045m2.Either use Stefan Boltzmann law or take hr (radiative heat transfer co-efficient) as 0.227.ε = ( Tav/100 )3
Statement 1: Radiation is NOT heat.Statement 2: Maximum value of absorptivity is 1.
Statement 1: Radiation needs a medium to travel.Statement 2: Thermal radiation takes place at a certain temperature for every body.
Statement 1: Radiation is the transfer of heat by electromagnetic waves.Statement 2: When heat is radiated from a hot source, the amount of heat received by the body depends on the nature of the body.
IN_DEEP_FREEZERS,_THE_WALLS_ABSORB_HEAT_FROM_FOOD_MATERIALS_BY_______AND_KEEP_THEM_COOL.?$
Radiation dryers use _____$
Statement 1: Radiation dryers are used to dry grains and reduce their moisture content before storage?