This scientist, author of the non-fiction book, Three Steps to Victory, contributed considerably to the development of the radar, which became an important tool in warfare.
Question 1:
This scientist, author of the non-fiction book, Three Steps to Victory, contributed considerably to the development of the radar, which became an important tool in warfare.
A.Sir John Cockcroft
B.Robert Watson-Watt
C.Ernest Walton
D.Lord Kelvin
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