A person standing on an open ground hears the sound of a jet Aeroplane, coming from north at an angle 60° with ground level. But he finds the Aeroplane right vertically above his position. If v is the speed of sound, speed of the plane is:
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Question

A person standing on an open ground hears the sound of a jet Aeroplane, coming from north at an angle 60° with ground level. But he finds the Aeroplane right vertically above his position. If v is the speed of sound, speed of the plane is:

Options

G1 Physics · Accepted Answer

Step 1: Use v = √(B/ρ) in a fluid, v = √(Y/ρ) for longitudinal waves in a solid, or v = √(γRT/M) for an ideal gas. Step 2: Form any required ratio before substituting values. Step 3: Evaluate with the data given. Final: C: v/2.