If the acceleration due to gravity on the surface of earth is g, then the acceleration due to gravity on the surface of a planet whose mass is same as that of earth and radius is half as that of earth is _________________.
Which of the statements given below is/are not correct? 1. 'Open' is an Autobiography of Andre Agassi. 2. The author of 'India 2020: A Vision for the New Millennium'A.P.J. Abdul Kalam. 3. The author of 'A Foreign Policy For India' is L.K Advani.