![What is the definition of hypersonic speed?](https://www.gkseries.com/blog/wp-content/uploads/thumbs_dir/Daily-Quiz-on-Current-Affairs-Made-with-PosterMyWall174-q7w5tohca2vlx7lcakuf0lsw3f8ko0k3kqrlq2mmxs.jpg)
(a) Speed greater than the speed of sound(b) Speed greater than Mach 5(c) Speed greater than Mach 10(d) Speed greater than Mach 20Ans.(b)Sol. Hypersonic speed is defined as a speed greater than Mach 5, where Mach 1 represents the speed of sound. Mach 5 corresponds to approximately 3,836 miles per ...
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