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The President of India is the head of state of India and the Supreme Commander of the Indian Armed Forces. The 'President' is referred to as the first citizen of India. There have been 14 presidents of India since the post established when India was declared as a republic with the adoption of the Indian constitution in 1950. Apart from these fourteen, three acting presidents have also been in office for a short period. Article 74(1) of the Constitution states that there shall be a council of ministers with Prime Minister as its head to aid and advice the President of India.     Name of the President   Tenure   Total   Remark 1 Dr. Rajendra Prasad 26th January 1950 To 13th May 1962 12 Years, 107 Days First President, Longest Tenure 2 Dr. Sarvepalli Radhakrishnan 13th May 1962 To 13th May 1967 5 Ye...

The  Kardashev scale  is a method that measures a civilization's level of technological advancement based on the amount of energy they use. Soviet astronomer Nikolai Kardashev proposed the measure in  1964 . Kardashev believed that a Type-IV civilization was impossible, so he proposed only three types. However, new types (0, 4, 5, and 6) have proposed by others. ·          A  Type I (1016W)  civilization, also called as  Planetary Civilization  - can use and store all of the energy available on its planet. ·          A  Type II (1026W)  civilization, also called as  Stellar Civilization  - can use and control energy at the scale of its planetary/solar system. ·          A  Type III (1036W)  civilization, also called as  Galactic Civilization  - can control energy at the scale of its entire...