While passing over a suspension bridge, soldiers are not allowed to march in steps. This is (a) To prevent any formation of sharp echo (b) Because there cannot be orderly marching (c) To prevent any occurrence of resonance with the bridge (d) To prevent the bridge from executing forced vibrations

While passing over a suspension bridge, soldiers are not allowed to march in steps. This is (a) To prevent any formation of sharp echo (b) Because there cannot be orderly marching (c) To prevent any occurrence of resonance with the bridge (d) To prevent the bridge from executing forced vibrations
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