Question : The scientist who first sent electromagnetic waves to distant places is
Option 1: James Clerk Maxwell
Option 2: Heinrich Hertz
Option 3: Thomas Alva Edison
Option 4: John Logie Baird
Correct Answer: Heinrich Hertz
Solution : The correct option is Heinrich Hertz.
Heinrich Hertz was the physicist who first transmitted electromagnetic waves across a substantial distance. In the latter half of the 19th century, he carried out experiments that demonstrated the existence of electromagnetic waves and their capacity to move through the air.
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Question : Hertz is a unit for measuring.
Option 1: Intensity of waves
Option 2: Frequency of waves
Option 3: Wavelength
Option 4: Clarity of waves
Question : ______ waves include visible light waves, X-rays, gamma rays, radio waves, microwaves, ultraviolet and infrared waves.
Option 1: Electromagnetic
Option 2: Mechanical
Option 3: Magnetic
Option 4: Electric
Question : Heinrich Rudolph Hertz laid the foundation for the future development of radio, telephone and telegraph. The SI unit of ____________ was named as "hertz" in his honour.
Option 1: frequency
Option 2: heat
Option 3: light
Option 4: sound
Question : In the remote control of television, electromagnetic waves are
Option 1: ultraviolet
Option 2: microwave
Option 3: radio wave
Option 4: infrared
Question : When did Heinrich Hertz discover the photoelectric effect and observe that shining ultraviolet light on the electrodes caused a change in voltage between them?
Option 1: 1916
Option 2: 1902
Option 3: 1990
Option 4: 1887
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