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Understanding Visible Light

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Questions and Answers

What is the speed of light in vacuum?

294957 km/s

299792458 m/s (correct)

310000000 m/s

300000000 m/s

Which electromagnetic radiation is also considered as light in physics?

Gravity waves

Gamma rays (correct)

Cosmic rays

Sound waves

What are the primary properties of light?

Energy, temperature, pressure, and density

Velocity, color, amplitude, and refraction

Intensity, propagation direction, frequency or wavelength spectrum, and polarization (correct)

Mass, volume, density, and charge

Which range of wavelengths defines visible light?

<p>$400–700$ nanometres (nm)</p> Signup and view all the answers

What is the main source of natural light on Earth?

<p>The Sun</p> Signup and view all the answers