Theories Of Light

Question 1

Who proposed the wave theory of light?

Answer 1

Thomas Young

Question 2

What is the speed of light in a vacuum?

Answer 2

299,792,458 meters per second

Question 3

True or false: Light behaves both as a wave and a particle.

Answer 3

True

Question 4

What is the phenomenon where light bends when passing through different mediums?

Answer 4

Refraction

Question 5

What is the unit of luminous flux?

Answer 5

Lumen

Question 6

Who proposed the particle theory of light?

Answer 6

Isaac Newton

Question 7

What is the process by which light is absorbed and re-emitted in all directions?

Answer 7

Scattering

Question 8

What is the bending of light around an obstacle called?

Answer 8

Diffraction

Question 9

What is the color of light with the longest wavelength?

Answer 9

Red

Question 10

What is the color of light with the shortest wavelength?

Answer 10

Violet

Question 11

What is the law that states the angle of incidence is equal to the angle of reflection?

Answer 11

Law of reflection

Question 12

Who proposed the corpuscular theory of light?

Answer 12

Christiaan Huygens

Question 13

What is the bending of light waves around small obstacles called?

Answer 13

Huygens-Fresnel principle

Question 14

What is the bending of light waves around sharp edges called?

Answer 14

Diffraction

Question 15

What is the process by which light is absorbed and re-emitted in a single direction?

Answer 15

Reflection

Question 16

What is the unit of illuminance?

Answer 16

Lux

Question 17

True or false: Light always travels in a straight line.

Answer 17

False

Question 18

What is the process by which light changes speed when passing through different mediums?

Answer 18

Refraction

Question 19

What is the color of light with the highest frequency?

Answer 19

Violet

Question 20

What is the color of light with the lowest frequency?

Answer 20

Red

Question 21

What is the law that states the ratio of the sine of the angle of incidence to the sine of the angle of refraction is a constant for a given wavelength?

Answer 21

Snell’s Law

Question 22

Who proposed the wave-particle duality of light?

Answer 22

Albert Einstein

Question 23

What is the phenomenon where light changes direction when passing through different mediums?

Answer 23

Refraction

Question 24

What is the unit of luminance?

Answer 24

Candela per square meter

Question 25

Who proposed the electromagnetic theory of light?

Answer 25

James Clerk Maxwell

Question 26

What is the process by which light is absorbed and re-emitted in a specific direction?

Answer 26

Reflection

Question 27

What is the unit of luminous intensity?

Answer 27

Candela

Question 28

True or false: Light can exhibit interference patterns.

Answer 28

True

Question 29

What is the phenomenon where light waves overlap and either reinforce or cancel each other out?

Answer 29

Interference

Question 30

What is the bending of light waves around sharp edges or corners called?

Answer 30

Diffraction

Question 31

What is the color of light with the highest energy?

Answer 31

Violet

Question 32

What is the color of light with the lowest energy?

Answer 32

Red

Question 33

What is the law that states the total energy of an isolated system remains constant over time?

Answer 33

Conservation of energy

Question 34

Who proposed the quantum theory of light?

Answer 34

Max Planck

Question 35

What is the phenomenon where light changes speed and direction when passing through different mediums?

Answer 35

Refraction

Question 36

What is the unit of luminous efficacy?

Answer 36

Lumen per watt

Question 37

Who proposed the wave nature of light?

Answer 37

Augustin-Jean Fresnel

Question 38

What is the process by which light is absorbed and re-emitted in a random direction?

Answer 38

Scattering

Question 39

What is the unit of luminous energy?

Answer 39

Lumen-second

Question 40

True or false: Light can exhibit both wave-like and particle-like behaviors simultaneously.

Answer 40

True

Question 41

What is the phenomenon where light waves bend around corners and edges?

Answer 41

Diffraction

Question 42

What is the bending of light waves around sharp edges or corners called?

Answer 42

Huygens-Fresnel principle