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Optics: Key Facts & Figures

Optics

Explore fundamental concepts, historical figures, and significant dates and numbers in the field of optics.

physics light history of science fundamental constants

8 Questions Easy Ages 10+ Apr 8, 2026

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About this Study Set

This study set covers Optics through 8 practice questions. Explore fundamental concepts, historical figures, and significant dates and numbers in the field of optics. Every question includes the correct answer so you can learn as you go — pick any format above to get started.

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Browse all 8 questions from the Optics: Key Facts & Figures study set below. Each question shows the correct answer — select a study format above to practice interactively.

1 Who first correctly described the law of refraction, often known as Snell's Law, around 1621?

A Isaac Newton
B Christiaan Huygens
C Willebrord Snellius
D Galileo Galilei

2 In which year did Isaac Newton publish his groundbreaking work 'Opticks,' detailing his experiments and theories on light and color?

A 1678
B 1704
C 1727
D 1666

3 Which ancient scholar, often referred to as 'the father of optics,' wrote 'Kitāb al-Manāẓir' (Book of Optics) around 1021 AD?

A Aristotle
B Ptolemy
C Ibn al-Haytham (Alhazen)
D Euclid

4 Galileo Galilei significantly improved the astronomical telescope and used it for observations starting in which year?

A 1589
B 1609
C 1632
D 1665

5 What is the approximate speed of light in a vacuum, a fundamental constant in optics and physics?

A 3 x 10^5 m/s
B 3 x 10^8 m/s
C 3 x 10^10 m/s
D 3 x 10^2 m/s

6 Who proposed the wave theory of light in his 'Treatise on Light' (Traité de la lumière) published in 1690?

A Robert Hooke
B Christiaan Huygens
C Isaac Newton
D Thomas Young

7 Albert Einstein published his paper explaining the photoelectric effect in which pivotal year, contributing to the quantum theory of light?

A 1895
B 1905
C 1915
D 1925

8 Approximately what is the wavelength range (in nanometers) for visible light that the human eye can perceive?

A 100-200 nm
B 400-700 nm
C 800-1000 nm
D 1500-2000 nm

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