Wave speed v = 300 m/s, frequency f = 150 Hz. Wavelength λ is: MCQ with Answer and Explanation

Explanation:
v = f λ = 500 × 0.68 = 340 m/s, typical speed of sound in air.

Explanation:
Pressure is scalar (no direction), though force is vector. Reason: Pascal's law - fluid pressure transmits equally in all directions, confirming scalar nature. Memory aid: 'Pressure = force/area (scalar division); isotropic in fluids'. Assertion-reason testing fluid mechanics fundamentals, common in competitive exams.

Explanation:
v = c/n = 3×10⁸/1.5 = 2×10⁸ m/s.