A rectangular pulse and a triangular pulse approach each other along the x-axis, each with speed 0.5 cm s⁻¹. Find the resultant displacement at x = 0.25 cm and t = 1 s.

Question

G1 Physics · Accepted Answer

Step 1: Add the waves as phasors. For two amplitudes A₁,A₂ with phase difference φ, A² = A₁² + A₂² + 2A₁A₂ cosφ. Step 2: Intensity is proportional to A²; constructive/destructive conditions are Δ = nλ and Δ = (n+½)λ. Step 3: Apply the stated phases/path differences. Final: B: 2 cm.