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3.2 , motion in plane — Physics STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 SciencePhysics3.2 , motion in plane1 Mark
MCQ
A river is flowing from west to east at a speed of $8\,m$ per min. A man on the south bank of the river, capable of swimming at $20\,m / min$ in still water, wants to swim across the river in the shortest time. He should swim in a direction
  • ✓
    due north
  • B
    $30^{\circ}$ east of north
  • C
    $30^{\circ}$ west of north
  • D
    $60^{\circ}$ east of north
✓

Answer

Correct option: A.
due north
a
(a)

For shortest time one should swim at right angles to river current.

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