What did Wilhelm Conrad Roentgen discover ?

This question was previously asked in
SSC CHSL Previous Paper 121 (Held On: 19 March 2020 Shift 2)
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  1. Conservation of electric charge
  2. Electric bulb
  3. X-Rays
  4. Thermodynamics

Answer (Detailed Solution Below)

Option 3 : X-Rays
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SSC CHSL Exam 2023 Tier-I Official Paper (Held On: 02 Aug 2023 Shift 1)
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Detailed Solution

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The correct answer is X-Rays.

Key Points

  • Wilhelm Conrad Röntgen was a German mechanical engineer and physicist born in 27th March 1845.
  • In 1901, he awarded the first Nobel Prize for Physics for the discovery of X-Rays.
  • This X-ray tube became a frequently used instrument in medicine after this discovery.

Additional Information

  •  Thomas Alva Edison invented Electric Bulb and Gramophone.
  • Sadi Carnot is the father of Thermodynamics.
    • Thermodynamics is the branch of physics that deals with heat, work, and temperature, and their relation to energy, radiation, and physical properties of matter.
    • The four laws of Thermodynamics are; Zeroth Law of Thermodynamics, First Law of Thermodynamics, Second Law of Thermodynamics and Third Law of Thermodynamics.
  • Conservation of Electric Charge: Charge is neither created nor destroyed, it can only be transferred from one system to another.
  • Unit of charge is Coulomb.
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