Quiz on Optics

What is light classified as?

• A liquid

• A gas

• A form of energy

• A solid

What do we call the path of light?

• Light path

• Beam of light

• Wave of light

• Ray of light

Which of the following is a luminous object?

• The Moon

• A mirror

• A star

• A shadow

What happens to light when it travels from a rarer medium to a denser medium?

• It speeds up

• It bends away from the normal

• It disappears

• It bends towards the normal

What is the speed of light in vacuum?

• 3 x 10^10 m/s

• 3 x 10^5 m/s

• 3 x 10^8 m/s

• 3 x 10^6 m/s

What is the first law of refraction?

• The incident ray, refracted ray, and normal lie in the same plane

• The angle of incidence equals the angle of refraction

• Light does not need a medium

• Light travels in straight lines

What is Snell's law related to?

• Reflection of light

• Scattering of light

• Refraction of light

• Dispersion of light

What is the acronym for the colors of the spectrum?

• ROYGBIV

• CMYK

• VIBGYOR

• RGBY

What is dispersion of light?

• Bending of light

• Splitting of white light into colors

• Reflection of light

• Absorption of light

Which color of light has the highest wavelength?

• Violet

• Red

• Green

• Blue