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A2 Physics | Post your doubts here

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suggest why alchol and mercury thermometers give different readings at the same temp?
 
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suggest why alchol and mercury thermometers give different readings at the same temp?
AoA,
The specific heat capacity of mercury and alcohol is different, so they need different amounts of heat to raise the temp by 1 unit
 
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well in half wave rectification......during the half in which diode is reverse biased,,,,,,how the potential varies acroos diode?
, gettimg cnfused in this ....tell me the concept
 
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well in half wave rectification......during the half in which diode is reverse biased,,,,,,how the potential varies acroos diode?
Max potential across diode as its resistance is infinite
Because it does not allow current flow
 
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thats also not correct ..............it must become more negative,,,,,,what i think so.........
I guess its correct; Think as if that original graph can be represented as sin graph. then emf would be -cos graph for the particular range
 
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I guess its correct; Think as if that original graph can be represented as sin graph. then emf would be -cos graph for the particular range
ok that means emf becoming less negative as gradient decreasing from V vs x graph i.e like if 1.5 changes to 1.2 (suppose gradient) than with -ive -1.5 & -1.2 value increasing........corrrect me if i m wrong....hassam ones is right..
 
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Starting June 2010 now, will answer you in a couple of hours hopefully. Sorry for the delay...
I have solved it, found a logic myself bro,
But you do solve for me too, maybe our logics will match
Thanks bro
:)
 
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