If ${a_r}$ and ${a_t}$represent radial and tangential accelerations, the motion of a particle will be uniformly circular if
If ${a_r}$ and ${a_t}$represent radial and tangential accelerations, the motion of a particle will be uniformly circular if
- A
${a_r} = 0$ and ${a_t} = 0$
- B
${a_r} = 0$ but ${a_t} \ne 0$
- C
${a_r} \ne 0$ but ${a_t} = 0$
- D
${a_r} \ne 0$ and ${a_t} \ne 0$
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