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Surface Tension — JEE physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceJEE physicsSurface Tension1 Mark
MCQ
A force-time graph for a linear motion is shown in figure where the segments are circular. The linear momentum gained between zero and 8 second is

Image

  • A
    $-2 \pi$ newton $\times$ second
  • ✓
    Zero newton $\times$ second
  • C
    $+4 \pi$ newton $\times$ second
  • D
    $-6 \pi n$ newton $\times$ second
✓

Answer

Correct option: B.
Zero newton $\times$ second
(b) As the area above the time axis is numerically equal to area below the time axis therefore net momentum gained by body will be zero because momentum is a vector quantity.

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