Physics Inventions — Set 6
Inventions · भौतिकी के आविष्कार · Questions 51–60 of 70
Who invented the mercury-in-glass thermometer?
Correct Answer: A. Daniel Gabriel Fahrenheit
• **Daniel Gabriel Fahrenheit** = Fahrenheit invented the mercury-in-glass thermometer. • **1714** — Fahrenheit invented his reliable mercury thermometer in **1714**. • 💡 Wrong-option analysis: Galileo Galilei: Created an early, less precise thermoscope, not the mercury thermometer; Anders Celsius: Developed the Celsius temperature scale, which is widely used today; Lord Kelvin: Developed the Kelvin temperature scale, an absolute thermodynamic temperature scale.
The first practical telephone was patented by?
Correct Answer: B. Alexander Graham Bell
• **Alexander Graham Bell** = Alexander Graham Bell was granted the patent for the first practical telephone. • **1876** — Bell was granted the patent for the telephone in **1876**. • 💡 Wrong-option analysis: Thomas Edison: Made significant improvements to the telephone, including the carbon microphone; Nikola Tesla: Known for his work on alternating current and radio technology; Guglielmo Marconi: Credited with the invention of the radio.
Who is credited with the invention of the barometer?
Correct Answer: B. Evangelista Torricelli
• **Evangelista Torricelli** = Evangelista Torricelli is credited with the invention of the barometer. • **1643** — Torricelli invented the mercury barometer in **1643**. • 💡 Wrong-option analysis: Isaac Newton: Known for laws of motion and universal gravitation, not the barometer; Robert Boyle: Formulated Boyle's Law regarding gases, but did not invent the barometer; Blaise Pascal: Conducted experiments with barometers to demonstrate atmospheric pressure, but Torricelli was the inventor.
The discovery of X-rays was made by which physicist in 1895?
Correct Answer: D. Wilhelm Röntgen
• **Wilhelm Röntgen** = Wilhelm Röntgen discovered X-rays while working with cathode ray tubes. • **1895** — Röntgen discovered X-rays in **1895**, a discovery for which he won the first Nobel Prize in Physics. • 💡 Wrong-option analysis: Ernest Rutherford: Known for his pioneering work in nuclear physics and the discovery of the atomic nucleus; Niels Bohr: Made foundational contributions to understanding atomic structure and quantum theory; Marie Curie: A pioneer in radioactivity research, discovered polonium and radium.
Who invented the first successful airplane?
Correct Answer: B. The Wright Brothers
• **The Wright Brothers** = Orville and Wilbur Wright made the first powered, controlled flight, inventing the first successful airplane. • **1903** — The Wright Brothers achieved their historic flight in **1903** at Kitty Hawk, North Carolina. • 💡 Wrong-option analysis: Alberto Santos-Dumont: A Brazilian aviation pioneer who made significant early flights, especially in Europe; Otto Lilienthal: A German pioneer who was crucial in the development of gliders and understanding flight mechanics; Leonardo da Vinci: Conceptualized flying machines centuries before practical flight, but never built one.
The invention of the lightning rod is attributed to?
Correct Answer: B. Benjamin Franklin
• **Benjamin Franklin** = Benjamin Franklin is attributed with the invention of the lightning rod. • **Kite experiment** — Franklin famously used a **kite experiment** to prove that lightning is a form of electricity. • 💡 Wrong-option analysis: Michael Faraday: Known for his discoveries in electromagnetism and electrochemistry; Alessandro Volta: Invented the electric battery, known as the voltaic pile; Thomas Edison: Known for the practical incandescent light bulb and phonograph, not the lightning rod.
Who invented the first alternating current (AC) electricity system?
Correct Answer: A. Nikola Tesla
• **Nikola Tesla** = Nikola Tesla designed the first alternating current (AC) electricity system. • **'War of Currents'** — Tesla famously competed with Edison during the '**War of Currents**' over AC vs. DC power. • 💡 Wrong-option analysis: George Westinghouse: A key proponent of AC power and Tesla's business partner in commercializing it; Thomas Edison: A strong advocate for direct current (DC) power; James Watt: Known for his improvements to the steam engine, not electricity systems.
The first practical mechanical television was demonstrated by?
Correct Answer: D. John Logie Baird
• **John Logie Baird** = John Logie Baird demonstrated the first practical mechanical television. • **1926** — In **1926**, John Logie Baird demonstrated the first working television system in London. • 💡 Wrong-option analysis: Guglielmo Marconi: Credited with the invention of radio; Vladimir Zworykin: Invented a crucial component for electronic television, the iconoscope; Philo Farnsworth: Developed a fully electronic television system, distinct from Baird's mechanical one.
Who invented the first steam engine for practical use?
Correct Answer: C. Thomas Newcomen
• **Thomas Newcomen** = Thomas Newcomen invented the first steam engine for practical use. • **1712** — Newcomen invented his atmospheric steam engine in **1712** to pump water out of mines. • 💡 Wrong-option analysis: James Watt: Made significant improvements to Newcomen's engine, but was not the original inventor; Robert Fulton: Known for the first commercially successful steamboat; George Stephenson: Developed the 'Rocket' locomotive and is considered the 'Father of Railways'.
The inventor of the dynamite was?
Correct Answer: C. Alfred Nobel
• **Alfred Nobel** = Alfred Nobel invented dynamite, a safer alternative to liquid nitroglycerin. • **1867** — Alfred Nobel invented dynamite in **1867**. • 💡 Wrong-option analysis: Robert Oppenheimer: A theoretical physicist known as the 'father of the atomic bomb'; Marie Curie: A pioneer in radioactivity research, not dynamite; Louis Pasteur: Known for pasteurization and vaccines, not explosives.