Multiple choice

Who invented of the 'Valve of Radio'?

  1. Sir J. A. Fleming

  2. James Watt

  3. C. Sholes

  4. None of these

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A Correct answer
Explanation

Sir J.A. Fleming invented the vacuum tube (thermionic valve), which is commonly referred to as the 'valve' in British English terminology. James Watt invented the steam engine, and C. Sholes invented the typewriter. Fleming's invention of the diode valve in 1904 was crucial for radio detection and amplification. This question tests knowledge of early radio technology pioneers.

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