1 g of water of volume 
at 
is converted into steam at same temperature under normal atmospheric pressure ( 
). The volume of steam formed equals 
. If the specific latent heat of vaporisation of water is 
, the change in internal energy is
Text Solution
Verified by ExpertsThe correct answer is:
B
Given, mass of water, 
Volume of 1 g of water 
Volume of 1 g of steam 
Pressure, 
Latent heat of vaporisation of water, 
Change in volume, 
… (i)
Heat supplied,
… (ii)
As the steam expands, so the work done in expansion is
[from Eq.(i)]
… (iii)
According to first law of thermodynamics,
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