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Motion — Science STD 9 — Question

CBSE BoardEnglish MediumSTD 9ScienceMotion1 Mark
MCQ
Particles P and Q are undergoing uniform horizontal circular motions along concentric circles of different radii in clockwise sense P completes each round in 2min while Q does it is 5min time required by Q to make one revolution around P is.
  • A
    3min.
  • B
    10min.
  • C
    $\frac{10}{3}\text{min}$
  • D
    This is not possible as Q is moving slower than P.
✓

Answer

  1. 3min.

Explanation:

Time required by Q to move around P

= Time taken by Q for for one complete round - Time taken by P for one complete round

= 5min - 2min

= 3min.

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