Question

what is meant by nuclear fusion.

Answer 1

nuclear fusion the name itself tells
nucleas fusing together :D.. you need to go through your textbook to understand it in detail mate :P.. then if you get some specific doubts post it here.. ;-)!

Answer 2

This may help: http://is.gd/S89oDz

Answer 3

my elementary physics taught me what is nuclear fission is. but my doubt is, according to static physics two similar charges should repel each other. But how these nucleus are bounding together. why huge amount of energy is released when nucleus are fused together. what force making them to fuse together.