A) 6 J
B) 8 J
C) 10 J
D) 16 J
Correct Answer: C
Solution :
: Distance between two points\[({{x}_{1}},{{y}_{1}})\]and\[({{x}_{2}},{{y}_{2}})\]is given by \[{{(distance)}^{2}}={{({{x}_{1}}-{{x}_{2}})}^{2}}+{{({{y}_{1}}+{{y}_{2}})}^{2}}\] \[\therefore \] \[{{(distance)}^{2}}={{(6-3)}^{2}}+{{(8-4)}^{2}}\] \[={{(3)}^{2}}+{{(4)}^{2}}=9+16=25\] or distance \[=5\text{ }m\] \[\therefore \] Work done = force\[\times \] distance\[=(2\times 5)J\] \[=10J.\]
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