1.

A lead ball moving with a velocity V strikes a wall and stops. If 50% of its energy is converted into heat, then what will be the increase in temperature (Specific heat of lead is S) [RPMT 1996]

A.   \[\frac{2{{V}^{2}}}{JS}\]  
B.   \[\frac{{{V}^{2}}}{4JS}\]
C.   \[\frac{{{V}^{2}}}{J}\]       
D.   \[\frac{{{V}^{2}}S}{2J}\]
Answer» C.   \[\frac{{{V}^{2}}}{J}\]       


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