The first fundamental law of Physics "All the phenomena happening in the universe take place under some certain laws of the nature. We have no control on the laws of the nature." This law is the fundamental foundation of physics. The entire physics is founded on this fundamental concept. All other laws of the physics is based on this law. Physics is the subject of experimentation, observation and mathematical modelling of the phenomena of the nature. These methods lead to some conclusions and these conclusions take the form of laws of physics. In physics it is believed that the natural phenomena work under some fundamental laws.The definition of physics states that physics is the study of laws of the nature. The definition of physics itself states that the nature works on some certain laws and investigating these laws is called as physics. This is the foundation of physics on which all other fundamental laws of physics are dependent.