Practice question

Given: What is the Celsius temperature equivalent to 400 K ? These values define the system as per NCERT data. Formula: Relation: T_C = T - 273.15. This is the standard NCERT relation for this phenomenon. Substitution & Calculation: Given: T = 400 K . T_C = 400 - 273.15 = 126.85° C approx 127° C . Result: The computed value matches the expected outcome and confirms the correct choice. Units and powers like J kg⁻¹ K⁻¹, m/s², 10⁻⁵ are properly used as per NCERT.