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A river has a cross-sectional area of 150 m² and flows at a velocity of 4 m/s. W

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Question: A river has a cross-sectional area of 150 m² and flows at a velocity of 4 m/s. What is the discharge of the river? (2021)

Options:

  1. 600 m³/s
  2. 400 m³/s
  3. 300 m³/s
  4. 200 m³/s

Correct Answer: 600 m³/s

Exam Year: 2021

Solution: 

Discharge = area × velocity = 150 m² × 4 m/s = 600 m³/s.

A river has a cross-sectional area of 150 m² and flows at a velocity of 4 m/s. W

Practice Questions

Q1
A river has a cross-sectional area of 150 m² and flows at a velocity of 4 m/s. What is the discharge of the river? (2021)
  1. 600 m³/s
  2. 400 m³/s
  3. 300 m³/s
  4. 200 m³/s

Questions & Step-by-Step Solutions

A river has a cross-sectional area of 150 m² and flows at a velocity of 4 m/s. What is the discharge of the river? (2021)
  • Step 1: Identify the cross-sectional area of the river, which is given as 150 m².
  • Step 2: Identify the velocity of the river, which is given as 4 m/s.
  • Step 3: Use the formula for discharge, which is Discharge = Area × Velocity.
  • Step 4: Substitute the values into the formula: Discharge = 150 m² × 4 m/s.
  • Step 5: Calculate the discharge: 150 × 4 = 600 m³/s.
  • Discharge Calculation – Discharge is calculated by multiplying the cross-sectional area of a river by its flow velocity.
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