Which concept popularized by Justice P.N. Bhagwati in the late 1970s relaxed traditional locus standi rules to allow public-spirited citizens to approach courts for justice?

💡 Solution & Explanation

Public Interest Litigation relaxed traditional locus standi requirements, allowing individuals or groups to approach higher courts on behalf of marginalized citizens. Judicial review empowers courts to invalidate unconstitutional legislation passed by the legislature. Judicial activism and PIL mechanisms are core concepts in Indian constitutional law.