The coefficieents of absorption and transmission of the are 0.50 and 0.25 respectively. If 200 alories of radiant heat is incident on the surface of the body, the quantity of heat reflected will be

The coefficieents of absorption and transmission of the are 0.50 and 0

1.	The coefficieents of absorption and transmission of the are 0.50 and 0.25 respectively. If 200 alories of radiant heat is incident on the surface of the body, the quantity of heat reflected will be
Answer» 140 cal 150 cal 50 cal 200 cal Solution :`a+R+t=1` `r=1-(a+t)=1-0.75=0.25` `Q_(r)=rQ=0.25xx200=50cal`

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The coefficieents of absorption and transmission of the are 0.50 and 0.25 respectively. If 200 alories of radiant heat is incident on the surface of the body, the quantity of heat reflected will be

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