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What islatentheat ?Give is unitswith the helpof asuitablegraph , explainthetermslatentheatof fusion latentheat ofvaporisation.

Answer» <html><body><p>`</p>Solution :latent heat: <br/>The amountof heattransferredper unitmas duringthechangeof phaseof asubstancewithoutany changein itstemperatureis calledlatentheat of thesubstanceforparticularchange<br/> <img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/SUR_PHY_XI_V02_C08_E15_005_S01.png" width="80%"/> <br/>Latentheatis denotedby Land havingSI,<br/> (i)<a href="https://interviewquestions.tuteehub.com/tag/latentheat-2782886" style="font-weight:bold;" target="_blank" title="Click to know more about LATENTHEAT">LATENTHEAT</a> offusion :<br/>It islatentheat forsolid -liquidstatechangeit isdenotedby Lfand is givenby <br/>latentheatof fusionLf `= (Q)/(m)` <br/> ItSI unitis `jK^(-1)`<br/> (ii) latentheat ofvaporisation :<br/>It islatentheat for liquid- gaschangeIt isdenotedby L v andoftenreferredto asheatof fusionand heatofvaporisation. Itis givenby <br/>Latentheat ofvaporisatin `L_(v)= (Q)/(m)`and its<br/> SIunitis`J <a href="https://interviewquestions.tuteehub.com/tag/kg-1063886" style="font-weight:bold;" target="_blank" title="Click to know more about KG">KG</a>^(-1)`<br/>startingapointA thesubstanceis initssolidphasaeheatingitbringsthe temperatureup toitsmeltingpointbut thematerialis stilla solidatpoint B. As it is heatedfurtherthe energyfrom theheatsourcegoesintobreaking thebondsholdingthe atomsisplace.<br/> Thistakesplace from Bto C.AtpointCallof the solidphasebeentransformedintothe liquidphase. Onceagainasenergyis added theenergygoes intothe <a href="https://interviewquestions.tuteehub.com/tag/kineticenergyof-2771651" style="font-weight:bold;" target="_blank" title="Click to know more about KINETICENERGYOF">KINETICENERGYOF</a> theparticlesraisingthetemperature(C to D). AtpointD thetemperaturehasreached itsboilingpointbutit isstillintheliquidphase. frompointsD <a href="https://interviewquestions.tuteehub.com/tag/toe-710610" style="font-weight:bold;" target="_blank" title="Click to know more about TOE">TOE</a> thermalenergyis overcomingthe bondsand theparticleshaveenoughkineticenergyto escape <a href="https://interviewquestions.tuteehub.com/tag/fromthe-1000726" style="font-weight:bold;" target="_blank" title="Click to know more about FROMTHE">FROMTHE</a> liquidthe substanceis enteringthe gasphase. <br/> BeyondE, Furtherheatingunderpressurecan raisethe temperaturestillfurtheris howa pressurecookerworks .</body></html>


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