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The joule is named after the physicist:

AJames Dewar
BJames Joule
CJames Watt
DJames Clerk
Answer & Solution
Correct answer: B. James Joule
1. The unit honours a British physicist. 2. It is named after James Prescott Joule. 3. So the correct answer is James Joule. _Source: syllabus Physics Part I, Ch 6 'Work, Energy and Power'_
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