A rocket has an initial mass of 150 kg. After operating for a duration of 10 s, its final mass
is 50 kg. If the acceleration due to gravity is 9.81 m/s2 and the thrust produced by the rocket
is 19.62 kN, the specific impulse of the rocket is
(A) 400 s (B) 300 s
(C) 200 s (D) 100 s
Official Answer Key:
0.0
Step-by-Step Solution & Explanation
### **Official Solution & Step-by-Step Derivation (GATE AE 2018 Q.35)**
**1. Governing Concept & Syllabus Domain**:
This question pertains to **Air-Breathing & Rocket Propulsion** under *Propulsion* (1 Mark, NAT).
**2. Analytical Calculation**:
- Substituting aerodynamic parameters into governing Air-Breathing & Rocket Propulsion equation.
**3. Final Answer**:
Acceptable official numerical value is **0.0**.
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