A canal has rectangular cross section of width10cm and breadth 1m. If water of uniform density 1 gm cm-3 flows through it at a constant speed of1000mm per minute, the adjacent sea is
 

  • A 100000
  • B 1000000
  • C 120000
  • D 30000
  • E 350000
jamb 1978mathematics

The correct answer is A. 100000

The canal's width = 10cm = 100mm (given)
The speed of water = 1000mm
10mm = 1cm
1000mm = 100cm
The adjacent sea must give speed x width
= 1000 x 100 = 100,000

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