<h1>Rupee breaches 89 per USD amid steepest single-day fall driven by equity weakness and dollar strength.</h1> The rupee depreciated sharply intraday, breaching 89 per US dollar and hitting an intra-day low near 89.50 before trading around 89.40-89.46. The decline was driven by weaker domestic equity markets, a firmer dollar as indicated by the dollar index, and movements in commodity prices, while domestic data showed flat growth across eight core infrastructure sectors with mixed sectoral performance.