Mumbai, July 11 -- Indian equities staged a sharp comeback on Friday as better-than-expected earnings from Tata Consultancy Services (TCS) and easing geopolitical concerns revived investor sentiment after a turbulent week dominated by renewed US-Iran hostilities and higher oil prices. Analysts, however, said the rebound would need support from more encouraging corporate earnings and easing geopolitical tensions to sustain next week. On Friday, the BSE Sensex jumped 1.08% to close at 77,569.39, while the Nifty 50 gained 1.02% to settle at 24,206.90. The gains built on Thursday's modest recovery of 0.31% and 0.34%, respectively, after Wednesday's sharp sell-off. Even so, the two-day rebound was not enough to erase the more than 2% decline on Wednesday, leaving both benchmark indices about 0.2% lower for the week. Markets remained under pressure for most of the week after fresh US strikes on Iran reignited fears of a wider regional conflict, pushing crude oil prices from $72.76 a barrel last Friday to $76.34 this Friday and triggering profit booking. Sentiment improved after TCS's June-quarter earnings marginally exceeded revenue expectations and reports suggested Washington and Tehran were continuing diplomatic talks despite the recent exchange of fire. "Friday's rebound was supported by both fundamental factors and short covering," said Rajesh Singla, chief executive officer and fund manager at Alpha AMC. "Easing geopolitical concerns and TCS's better-than-expected revenue helped the market recover. However, the sustainability of the rebound will depend on whether upcoming IT results confirm demand stability and whether tensions in West Asia remain contained."...