Reflection and Refraction of Light

What must objects do to be seen?

• Emit light

• Reflect light

• Transmit light

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What happens when a beam of light hits a transparent medium?

• It is completely absorbed

• It only reflects

• A portion reflects and a portion goes through

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According to the law of reflection, how are the angles of the incident ray and the reflected ray related?

• They are not related

• They are opposite

• They are equal

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What is specular reflection?

• Reflection from a transparent medium

• Reflection from a smooth surface

• Reflection from a curved surface

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What causes diffuse reflection?

• Parallel rays reflecting at different angles

• Parallel rays reflecting at the same angle

• A beam of light bending as it passes through a medium

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What is refraction?

• The scattering of light in many directions

• The reflection of light from a smooth surface

• The bending of light as it passes through a medium

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Who discovered Snell's Law?

• Isaac Newton

• Galileo Galilei

• Willard Snell

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Why does light change direction when passing from one medium to another?

• Because it reflects off the surface

• Because it changes speed

• Because it is absorbed and re-emitted

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What is total internal reflection?

• When light is completely absorbed by a medium

• When light is reflected back into the medium

• When light reflects off a mirror

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What did Isaac Newton discover about white light?

• It is made up of all the colors of the rainbow

• It is the absence of color

• It is a single color