Choose the correct option for the following Assertion (A) and Reason (R).

Question

G1 Physics · Accepted Answer

Newton used B = P, which gives vₙ = √(P/ρ). For rapid sound-wave changes, Laplace used the adiabatic bulk modulus B = γP. Therefore, vₗ = √(γP/ρ) = √γ vₙ. Because γ > 1, Laplace's value is larger and agrees much better with experiment. Both Assertion and Reason are true, and the Reason correctly explains the Assertion. Correct option: A.