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

Light travels from air (n = 1.00) into a glass block that has an index of refraction of 1.46. The incident ray of light hits the surface at angle of 45^o. At what angle will the light ray enter the glass? n₁sin(Θ₁) = n₂sin(Θ₂)

• 45^o

• 29^o

• 31^o

• 64^o

Tags

NGSS.HS-PS4-5

------------ is also called Snells law.

• The second law of refraction

• The first law of refraction

• The second law of reflection

The bending of light ray is due to change in speed of light in different media. State True or False.

• True

• False

Tags

NGSS.MS-PS4-2

When a light ray is travelling from denser medium to rarer medium, it -----------.

• bends towards the normal

• bends away from the normal

• does not bend

When a light ray travels from rarer medium to denser medium, it -----------.

• bends towards the normal

• bends away from the normal

• does not bend

Tags

NGSS.MS-PS4-2

• 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 45º and 24º respectively. what is the index of refraction of the unknown medium? Round off your values to 3 sig. figs.

• 2.31

• 2.35

• 0.77

• 0.76