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  3. 12th Class
  4. Mental Ability
  5. Time and Clock

12th Class Mental Ability Time and Clock Question Bank Question - Time and Clocks

  • question_answer
    If a clock starts moving at noon, by 10 minutes past 5 the hour hand of the clock has moved by:

    A) \[145{}^\circ \]

    B) \[150{}^\circ \]

    C) \[155{}^\circ \]

    D) \[160{}^\circ \]

    E) None of these

    Correct Answer: C

    Solution :

    Explanation Option (c) is correct. Angle traced by hour hand in\[12\text{ }hrs=360{}^\circ \]. Angle traced by hour hand in 5 hrs 10 min. i.e., in \[\frac{31}{6}\,hrs\,\,=\,\,\left( \frac{360}{12}\times \frac{31}{6} \right){}^\circ \,\,=\,\,155{}^\circ \].


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