Question

When the minute hand of a clock moves by ${120}^{\circ }$, the hour hand moves by ${10}^{\circ }$.

• A. True
• B. False

Answer 1

The correct option is A

True

When the hour hand moves by an angle of ${360}^{\circ }$, the minute hand moves $12\times {360}^{\circ }$.

$\underset{–}{Minutehand}$ $\underset{–}{Hourhand}$ $12\times {360}^{\circ }\to {360}^{\circ }$

${120}^{\circ }\to \frac{{360}^{\circ }}{12\times {360}^{\circ }}\times {120}^{\circ }$

$={10}^{\circ }$