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Fundamentals of Optics

Optics

Key historical figures, constants, and measurements in the field of optical science.

physics light history

8 Questions Medium Ages 12+ Jul 24, 2026

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About this Study Set

This study set covers Optics through 8 practice questions. Key historical figures, constants, and measurements in the field of optical science. Every question includes the correct answer so you can learn as you go — pick any format above to get started.

Questions & Answers

Browse all 8 questions from the Fundamentals of Optics study set below. Each question shows the correct answer — select a study format above to practice interactively.

1 In what year did Willebrord Snellius formulate the law of refraction, now known as Snell's Law?

A 1621
B 1609
C 1635
D 1666

2 What is the approximate speed of light in a vacuum, expressed in meters per second?

A 299,792,458
B 150,000,000
C 384,400,000
D 330,000,000

3 Who is credited with the publication of 'Opticks' in 1704, which detailed experiments on the spectrum of light?

A Christian Huygens
B Isaac Newton
C Thomas Young
D Augustin-Jean Fresnel

4 Visible light occupies which range of the electromagnetic spectrum in nanometers?

A 100-300 nm
B 380-750 nm
C 800-1200 nm
D 1500-2000 nm

5 Which scientist conducted the famous experiment in 1801 demonstrating the wave nature of light through double-slit interference?

A James Clerk Maxwell
B Albert Einstein
C Thomas Young
D Max Planck

6 The refractive index of a vacuum is defined exactly as which value?

A 0.5
B 1.0
C 1.33
D 2.42

7 In 1905, Albert Einstein published a paper proposing that light consists of individual packets of energy called what?

A Electrons
B Quarks
C Photons
D Neutrinos

8 What is the standard unit of power for an optical lens, equal to the reciprocal of the focal length in meters?

A Dioptre
B Watt
C Candela
D Lumen

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