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#1 Posted 1:16pm 07-03-10 INPHO questions 2010[image]43447929.jpg[/image] [image]43447962.jpg[/image]
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#2 Posted 2:44pm 07-03-10 Re: INPHO questions 2010From where did u get them ?? i mean i wanted the q paper.....if u can tell the source |
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#3 Posted 09:44am 08-03-10 Re: INPHO questions 2010http://olympiads.hbcse.tifr.res.in/announcements/INO%202010%20Papers
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#4 Posted 3:30pm 09-03-10 Re: INPHO questions 2010Is the answer key, or solution to the paper is available? I have the paper and have tried some. Wanted to check the answers.
Edited on 3:31pm 09-03-10 |
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#5 Posted 3:32pm 09-03-10 Re: INPHO questions 2010yeah.. they are .. look at the link abv only answers available ..
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#6 Posted 3:34pm 09-03-10 Re: INPHO questions 2010okk [hide]ye question nahi hua :P[/hide] |
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#7 Posted 1:28pm 20-03-10 Re: INPHO questions 2010pls help
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#8 Posted 10:49pm 20-03-10 Re: INPHO questions 2010Needless to mention the pressure will be he same in all the 3 compartments, and temperature will be same in the last 2 compartments. With these things in mind, we have the common pressure of the 3 compartments as [im]http://codecogs.izyba.com/gif.latex?P_2[/im] and the temp in the last 2 compartments as [im]http://codecogs.izyba.com/gif.latex?%5Cfrac%7B9T_0%7D%7B4%7D[/im] and the temp in A[ss]1[/ss] as T[ss]1[/ss]. With (A[ss]2[/ss]+A[ss]3[/ss]) as an adiabatic system, we have the equations... [im]http://codecogs.izyba.com/gif.latex?2V_2+V_1%3D3V_0[/im] ............(1), where V[ss]2[/ss] is the volumne of each compartment A[ss]2[/ss] & A[ss]3[/ss]. V[ss]1[/ss] is the volumne of A[ss]1[/ss]. Also [im]http://codecogs.izyba.com/gif.latex?P_2V_2%3D%5Cfrac%7B9%7D%7B4%7DP_0V_0[/im].......(2) [im]http://codecogs.izyba.com/gif.latex?P_2V_1%3D%5Cfrac%7BT_1%7D%7BT_0%7DP_0V_0[/im].........(3). Adiabatic relationships in combined (A[ss]2[/ss]+A[ss]3[/ss]) gives [im]http://codecogs.izyba.com/gif.latex?2P_0%282V_0%29%5E%7B%5Cfrac%7B5%7D%7B3%7D%7D%3D2P_2%282V_2%29%5E%7B%5Cfrac%7B5%7D%7B3%7D%7D[/im] Substitute P[ss]2[/ss] from (2) to get [im]http://codecogs.izyba.com/gif.latex?%5Cboxed%7BV_2%3D%5Cfrac%7B8%7D%7B27%7DV_0%7D[/im]. We also get [im]http://codecogs.izyba.com/gif.latex?%5Cboxed%7BP_2%3D%5Cfrac%7B243%7D%7B32%7DP_0%7D[/im]. From (1) & (3), we can get [im]http://codecogs.izyba.com/gif.latex?%5Cboxed%7BV_1%3D%5Cfrac%7B65%7D%7B27%7DV_0%7D[/im] & [im]http://codecogs.izyba.com/gif.latex?%5Cboxed%7BT_1%3D%5Cfrac%7B585%7D%7B32%7DT_0%7D[/im]. b) Ext. work done is [im]http://codecogs.izyba.com/gif.latex?%5Cfrac%7B4%28P_0V_0-%5Cfrac%7B9%7D%7B4%7DP_0V_0%29%7D%7B%5Cgamma%20-1%7D[/im] while the internal energy gives ΔU as C[ss]v[/ss]ΔT. Adding which we have W.D. as [im]http://codecogs.izyba.com/gif.latex?%5Cboxed%7BW%3D%5Cfrac%7B15P_0V_0%7D%7B4%7D%7D[/im]. c)total heat given is C[ss]p[/ss]ΔT, use R.T[ss]o[/ss]=P[ss]0[/ss]V[ss]0[/ss]. Finally d) is settled by the fact that entropy change of (A[ss]2[/ss]+A[ss]3[/ss]) is 0, while for A[ss]1[/ss] it is simply [frac]Heat given[/]change in temp.[/frac]. P.S - I cud not find the answers in that link u've given. Pls confirm the ans, and give me the link to the same. |
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#9 Posted 11:54pm 20-03-10 Re: INPHO questions 2010@Soumik Those answers are correct. The entropy change for A[ss]1[/ss] is [im]http://codecogs.izyba.com/gif.latex?\dfrac{3R}{2}\ln\dfrac{585}{32}+R\ln\dfrac{65}{27}[/im]
Edited on 00:06am 21-03-10 |
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#10 Posted 10:06am 21-03-10 Re: INPHO questions 2010thanks... the link for the answers is http://olympiads.hbcse.tifr.res.in/announcements/ino-2010-solutions (they changed the structure. .earlier it was in the same page)
IIT has walked to me ... off to IIT K |
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#11 Posted 1:27pm 21-03-10 Re: INPHO questions 2010Oh yeah - kaymant sir...
Edited on 1:34pm 21-03-10 |
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