An authority may acquire by the exercise of the power of eminent domain any real property which it may deem necessary for a redevelopment project or for its purposes under this chapter after the adoption by it of a resolution declaring that the acquisition of the real property described therein is necessary for such purposes. An authority may exercise the power of eminent domain in the manner prescribed by Chapter 61 of Title 10. Property already devoted to a public use may be acquired in like manner. No real property belonging to the municipality, the county or the State may be acquired without its consent. When an authority has found and determined by resolution that certain real property described therein is necessary for a redevelopment project or for its purposes under this chapter, the resolution shall be conclusive evidence that the acquisition of such real property is necessary for the purposes described therein.