Question

question 5 (1 point)
as light goes from a material with a high index of refraction (like water) to a material with a low index of refraction (like air), the light is bent

towards the normal
away from the normal
totally reflected
totally refracted

question 6 (1 point)
as the index of refraction of the second material increases, the angle of refraction _(i)_ and the ray is bent increasingly _(ii)_ the normal, if the angle of incidence is held constant.

the sentence above can be correctly completed with which of the following words?

decreases; away from
decreases; towards
increases; towards
increases; away from

Explanation:

Question 5

When light travels from a medium with a higher refractive index (water) to a lower one (air), according to the law of refraction (Snell's law), the light bends away from the normal. Total reflection occurs at a specific critical angle, and total refraction is not a standard term here.

Using Snell's law \( n_1\sin\theta_1 = n_2\sin\theta_2 \), if \( n_2 \) (refractive index of the second medium) increases and \( \theta_1 \) (angle of incidence) is constant, \( \sin\theta_2=\frac{n_1\sin\theta_1}{n_2} \) decreases, so \( \theta_2 \) (angle of refraction) decreases. A smaller angle of refraction means the ray bends towards the normal.

Answer:

B. away from the normal

Question 6