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  1. [2(V₀/V₁)]/ [1 + (V₀/V₁)²]
  2. (V₀/V₁)/ [1 + (V₀/V₁)²]
  3. V₀/(V₀ + V₁)
  4. V₁/(V₀ + V₁)
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1 Answers

Answer: Option 1

If V₁ is the jet velocity and V₀ is the vehicle velocity, then the propulsive efficiency of a rocket is given by [2(V₀/V₁)]/ [1 + (V₀/V₁)²]

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