A) \[360{}^\circ \]
B) \[360.5{}^\circ \]
C) \[390{}^\circ \]
D) \[380{}^\circ \]
Correct Answer: B
Solution :
According to question, \[\therefore \] In 1 h, min hand runs fast = 5 min \[\,=\frac{360{}^\circ }{12}=30{}^\circ \] \[\therefore \] In 1 min, minute hand runs fast \[=\frac{5}{12}=\frac{1}{12}\min \] \[=\frac{30{}^\circ }{60}=0.5{}^\circ \] \[\therefore \] In 1 min, angle traversed by a second hand \[\,=360{}^\circ +0.5{}^\circ =360.5{}^\circ \]
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