Miscellaneous (Physics) (Part-2)

Total Questions: 58

21. Who among the following invented the electric motor? [S.S.C. Online MTS (T-I) 19.09.2017 (Shift-1)]

Correct Answer: (c) Michael Faraday
Solution:Michael Faraday, an English scientist, is generally credited with inventing the first device that converted electrical energy into mechanical motion, a precursor to the electric motor, in 1821.

While it wasn't the practical electric motor we know today, his work laid the foundation for future developments.

22. Who among the following discovered the Microwave? [S.S.C. JE Electrical Exam 24.03.2021 (Shift-II)]

Correct Answer: (b) Percy Spencer
Solution:Percy Spencer, an American engineer working for Raytheon, is credited with the discovery of the microwave oven in the mid-1940s.
He accidentally noticed that a chocolate bar in his pocket melted while he was working near an active radar set.
This observation led him to experiment with using microwave radiation for cooking food. 

23. Who invented FM Radio? [S.S.C. Online CHSL (T-1) 24.01.2017 (Shift-2)]

Correct Answer: (a) Edwin Howard Armstrong
Solution:Edwin Howard Armstrong was an American electrical engineer who developed FM radio in the 1930s as a way to overcome the static and interference prevalent in AM (Amplitude Modulation) radio.

His invention provided significantly clearer audio quality and became the foundation for modern FM broadcasting.

24. Who among the following invented the radio? [S.S.C. Online MTS (T-1) 20.09.2017 (Shift-III)]

Correct Answer: (a) G. Marconi
Solution:While several scientists contributed to the understanding of electromagnetic waves and wireless transmission, Marconi is recognized for developing the first effective system of radio communication and for his pioneering work in long-distance radio transmission.
  • He received the Nobel Prize in Physics in 1909 for his contributions to the development of wireless telegraphy.

25. Steam engine was invented by _____ . [S.S.C. Online CHSL (T-1) 10.01.2017 (Shift-II)]

Correct Answer: (b) George Stephenson
Solution:The development of the steam engine involved contributions from several individuals over time, George Stephenson is widely recognized for his crucial work in developing steam locomotives.

His innovations were vital for the early success of railways and had a significant impact on the Industrial Revolution.

26. Who among the following invented the steam engine? [S.S.C. Online MTS (T-1) 16.09.2017 (Shift-III)]

Correct Answer: (d) James watt
Solution:

The modern steam engine was invented by James Watt in the 18th century. However, the development of steam power was a gradual process involving several inventors:

Key Figures in the Invention of the Steam Engine:

Thomas Savery (1698)
Built one of the first crude steam-powered devices to pump water out of mines.

Thomas Newcomen (1712)
Invented the atmospheric steam engine, the first practical device to use steam to do mechanical work (mainly pumping water from mines).

James Watt (1765 onward)
Greatly improved Newcomen’s design by adding a separate condenser, making the engine far more efficient.

Often credited with inventing the modern steam engine that powered the Industrial Revolution.

27. James watt is famous for the invention of _____ . [S.S.C. Online MTS (T-1) 13.10.2017 (Shift-2)]

Correct Answer: (b) Steam Engine
Solution:

The modern steam engine was invented by James Watt in the 18th century. However, the development of steam power was a gradual process involving several inventors:

Key Figures in the Invention of the Steam Engine:

Thomas Savery (1698)
Built one of the first crude steam-powered devices to pump water out of mines.

Thomas Newcomen (1712)
Invented the atmospheric steam engine, the first practical device to use steam to do mechanical work (mainly pumping water from mines).

James Watt (1765 onward)
Greatly improved Newcomen’s design by adding a separate condenser, making the engine far more efficient.

Often credited with inventing the modern steam engine that powered the Industrial Revolution.

28. Who among the following invented the diesel engine? [S.S.C. Online MTS (T-1) 18.09.2017 (Shift-III)]

Correct Answer: (b) Rudolf Diesel
Solution:Rudolf Diesel was a German engineer who invented the compression-ignition engine, which is now known as the diesel engine, in the 1890s.
  • He received a patent for his engine in 1892.

29. Who is the inventor of barometer? [S.S.C. Online MTS (T-1) 16.09.2017 (Shift-1)]

Correct Answer: (a) E. Torricelli
Solution:Evangelista Torricelli became the first scientist to create a sustained vacuum and to discover the principle of a barometer.
  • Torricelli realized that the variation of the height of the mercury from day to day was caused by changes in the atmospheric pressure.
  • Torricelli built the first mercury barometer around 1644.

30. Evangelista Torricelli was well known for which discovery? [S.S.C. Online CGL (T-1) 03.12.2022 (Shift-3)]

Correct Answer: (c) Invention of mercury barometer
Solution:Evangelista Torricelli was an Italian physicist and mathematician, and a student of Galileo.
  • He is best known for his invention of the barometer but also for his advances in optics and work on the method of indivisibles.
  • Torr is a unit of pressure. The Torr is named after him.