The fundamental right guaranteed in Article 21 of the Constitution is broadly drafted to incorporate everything that was, is and is going to be necessary to lead a life with personal liberty and dignity. Right to privacy is one of the aspects of the wide umbrella of the article. It has been, for certain years, in debates as to whether it should be a right guaranteed under the said article due to the evolution of society. The research paper argues that right to privacy has been rightly established as a fundamental right and therefore the reasons for the decision given by Justice Chelameswar, in specific, should be understood by applying different schools of interpretation. The two approaches applied for observation and analysis are teleological approach which was developed by Plato and Aristotle and comparative approach which was established through major contributions of Danish scholars Rasmus Rask and Karl Verner and a German scholar Jacob Grimm. These approaches have been chosen to comprehend Justice Chelameswar’s decision because the structure of his arguments attracts the basic elements of these two approaches. The researcher will employ qualitative research approach in the form of content analysis and analyze various research articles to understand the concept of the two approaches used by Justice Chelameswar.