What is the energy equivalent of 2 kg of matter in Joules? (Given c = 3 × 10⁸m/s )
Given: What is the energy equivalent of 2 kg of matter in Joules? (Given c = 3 × 10⁸m/s ) Formula: E = m c². Substitution & Calculation: m = 2 kg, c² = 9 × 10¹⁶m²/s² . E = 2 × 9 × 10¹⁶= 1.8 × 10¹⁷J . Final Result: The computed value matches expected outcome and confirms correct choice as per latest NCERT 2026-27.
Ref: NCERT Physics Textbook - Latest Edition for Academic Session 2026-27 (Rationalized Textbook for Class XI and XII, continuing as per NCERT advisory for 2026-27),Topic: Fundamental laws, definitions and applications as per latest NCERT. The section explains governing laws, formulas like μ₀ = 4π.