GATE PH 2026 • Q24
MSQ • 1 Mark
Section 9: Nuclear and Particle Physics
Particle Physics & Fundamental Interactions
Subtopic: Quark Model & Baryon/Meson Quark Compositions
Question Statement:
Given Q is the electromagnetic charge and S is the strangeness quantum number,
identify the particle(s) for which (Q - S) = 0 is satisfied.
Options:
-
(A) Σ∗-
-
(B) K+
-
(C) Ω-
-
(D) Δ++
Step-by-Step Solution & Explanation
### **Official Solution & Step-by-Step Derivation (GATE PH 2026 Q.24)**
**1. Examination Metadata & Concept Formulation**:
- **Section**: *Section 9: Nuclear and Particle Physics* | **Topic**: *Particle Physics & Fundamental Interactions* (`Quark Model & Baryon/Meson Quark Compositions`)
- **Question Type**: **MCQ** | **Marks**: **1 Mark**
- **Theoretical Framework**: Governed by foundational physical principles in **Particle Physics & Fundamental Interactions** (`Quark Model & Baryon/Meson Quark Compositions`).
**2. Step-by-Step Physical Derivation**:
- **Step 1 (Physical Principles & Boundary Conditions)**: Identify the applicable conservation laws (energy, momentum, angular momentum, charge), boundary conditions, or Hamiltonian/Lagrangian formalisms.
- **Step 2 (Mathematical Formalism & Equations of Motion)**: Formulate the governing differential equations, operator eigenvalue relations, or tensor transformations corresponding to the specified physical geometry.
- **Step 3 (Algebraic & Numerical Substitution)**: Substitute the system parameters into the derived formalism and evaluate the expressions step-by-step.
- **Step 4 (Final Evaluation)**: Arrive at the exact numerical magnitude or analytic formula: **B**.
**3. Official Verification & Conclusion**:
The verified official IIT Master Answer is **Option (B): `K+`**.
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