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
Fahrenheit invented the mercury thermometer in 1714. This version was more reliable and accurate than earlier liquid-based designs. He also developed the Fahrenheit temperature scale used globally for decades.
The first practical telephone was patented by?
Correct Answer: B. Alexander Graham Bell
Alexander Graham Bell was granted the patent for the telephone in 1876. He developed the device while researching speech and hearing for the deaf. His work founded the American Telephone and Telegraph Company (AT&T).
Who is credited with the invention of the barometer?
Correct Answer: B. Evangelista Torricelli
Torricelli invented the mercury barometer in 1643. He was a student of Galileo and investigated the 'vacuum' effect. His invention allowed scientists to measure and study atmospheric pressure for the first time.
The discovery of X-rays was made by which physicist in 1895?
Correct Answer: D. Wilhelm Röntgen
Röntgen discovered X-rays while working with cathode ray tubes in a dark room. He won the first-ever Nobel Prize in Physics for this monumental discovery. X-rays revolutionized medical diagnostics and imaging.
Who invented the first successful airplane?
Correct Answer: B. The Wright Brothers
Orville and Wilbur Wright made the first powered, controlled flight in 1903. They achieved this feat at Kitty Hawk, North Carolina. Their design served as the blueprint for all future aviation technology.
The invention of the lightning rod is attributed to?
Correct Answer: B. Benjamin Franklin
Benjamin Franklin invented the lightning rod to protect tall buildings from fire. He proved that lightning is a form of electricity using a kite. This was one of the first practical applications of electrical science.
Who invented the first alternating current (AC) electricity system?
Correct Answer: A. Nikola Tesla
Nikola Tesla designed the AC power system, which is the standard for modern power grids. AC allowed for efficient long-distance transmission of electricity. He famously competed with Edison during the 'War of Currents'.
The first practical mechanical television was demonstrated by?
Correct Answer: D. John Logie Baird
John Logie Baird demonstrated the first working television system in London in 1926. His mechanical system used rotating disks to scan and transmit images. Though eventually replaced by electronic TV, he was a true pioneer.
Who invented the first steam engine for practical use?
Correct Answer: C. Thomas Newcomen
Thomas Newcomen invented the first practical steam engine in 1712 to pump water out of mines. James Watt later improved the design significantly. This invention was a key driver of the Industrial Revolution.
The inventor of the dynamite was?
Correct Answer: C. Alfred Nobel
Alfred Nobel invented dynamite in 1867 as a safer alternative to liquid nitroglycerin. He used his massive wealth from the invention to establish the Nobel Prizes. Nobel was a chemist, engineer, and philanthropist.