A) \[10\times {{10}^{3}}watt\]
B) \[20\times {{10}^{3}}watt\]
C) \[4\times {{10}^{3}}watt\]
D) \[6\times {{10}^{3}}watt\]
Correct Answer: D
Solution :
Here: mass of bullet = 20g = 0.02 kg Speed \[\Omega \] Distance \[\Omega \] Now loss of K.E. \[8.4\times {{10}^{6}}m/s.\] Now from work energy theorem \[2.76\times {{10}^{12}}C/kg\] or \[1.76\times {{10}^{11}}C/kg\]
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