Snell's Law

Which of the following describes total internal reflection?

• Light is completely absorbed by the medium.

• Light is completely reflected back into the medium.

• Light passes through the medium without bending.

• Light is partially reflected and partially refracted.

Tags

NGSS.MS-PS4-2

In which situation would you observe refraction?

• Light travelling through a vacuum.

• Light passing through a glass of water.

• Light reflecting off a mirror.

• Light being absorbed by a black surface.

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NGSS.MS-PS4-2

What is the angle of incidence if the angle of refraction is 45° when light travels from air (n=1.00) to glass (n=1.50)?

• 28.1°

• 45.0°

• 60.0°

• 90.0°

Which of the following best explains why a straw appears bent in a glass of water?

• Reflection of light.

• Refraction of light.

• Diffraction of light.

• Absorption of light.

Tags

NGSS.MS-PS4-2

Which of the following statements is true about the behaviour of light at the boundary between two media?

• Light always speeds up when entering a new medium.

• Light always slows down when entering a new medium.

• Light can either speed up or slow down depending on the media.

• Light never changes speed when entering a new medium.

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NGSS.MS-PS4-2

Which of the following media has the highest refractive index?

• Air

• Water

• Glass

• Diamond

Light travels from air (n = 1.000) into an optical fiber. If the angles of incidence and refraction are 22º and 15º respectively. what is the index of refraction inside the fiber? Round off your values to 3 sig. figs. n_1\sin\theta_1=n_2\sin\theta_2

• 1.67

• 1.44

• 0.69

• 0.70

Light travels from water (n = 1.333) into an unknown medium. If the angles of incidence and refraction are 45^oand 24º respectively. what is the index of refraction of the unknwon medium? Round off your values to 3 sig. figs.

• 2.31

• 2.35

• 0.77

• 0.76

Snell's Law

• It describes the relationship between the angles of incidence and refraction when light passes through different media.

• It explains the phenomenon of total internal reflection.

• It is used to calculate the speed of light in a vacuum.

• It is a principle that describes the behavior of light in a single medium.

Snell's Law

• The angle of incidence is equal to the angle of refraction.

• The angle of incidence is greater than the angle of refraction when light enters a denser medium.

• The angle of incidence is less than the angle of refraction when light enters a denser medium.

• The angle of incidence is always 90 degrees.

Tags

NGSS.HS-PS4-5