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Sound Waves: Shock Wave MCQ

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Shock WaveMediumQuestion 31270

Question

A supersonic aircraft (M = 2) produces a Mach cone. Half-angle of cone is:
  1. A
    30°
    Correct
  2. B
    90°
  3. C
    60°
  4. D
    45°

Correct answer

30°

Explanation

sin(θ) = v_sound/v_source = 1/M = 0.5 → θ = 30°. Half-angle of Mach cone = arcsin(1/M).

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