The graph represented the relation between acceleration due to gravity(g) and depth (d) from the surface of the earth. The value of g at a depth of $640\ km$ is ;

At what height over the earth's pole does the freefall acceleration decreases by 1% ?

পৃথিবীর ব্যাসার্ধ 6400 km, পৃথিবীর নিজ অক্ষের সাপেক্ষে আবর্তনকাল 24 ঘণ্টা। ভূপৃষ্ঠে অভিকর্ষীয় ত্বরণ-9.8ms$^{-2}$

নিচের কোনটি সত্য নয় ?

How much percentage change in acceleration due gravity on an object occurs if object is initially at '2R' distance above the surface of the earth and falls through 'R' distance? (Here, R is the radius of earth)