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Monoatomic gases consist of single atoms not bonded to others. They include noble gases like helium, neon, argon, krypton, xenon and radon. These gases are chemically inert due to their stable electron configurations. They exist in a gaseous state at standard conditions and are used in lighting, insulation and scientific applications.
Class 11 Physics covers Waves in Chapter 12 for the CBSE Exam 2024-25. This chapter explains the nature and types of waves including mechanical and electromagnetic waves. It discusses wave motion, characteristics like wavelength, frequency and amplitude and principles like superposition and resonance. Understanding these concepts helps in solving numerical problems and real-life applications in physics.
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The ratio of specific heats (γ = Cₚ / Cᵥ) for a monoatomic gas is given by:
γ = (f + 2) / f
where f is the degrees of freedom. For a monoatomic gas, f = 3 (translational motion only), so
γ = (3 + 2) / 3 = 5/3 ≈ 1.67
So, the ratio of specific heats for monoatomic gas is 1.67.
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