4-1 points CJ10 26 P011 My Notes Ask Your Teac A ray of light impinges from air

Question

4-1 points CJ10 26 P011 My Notes Ask Your Teac A ray of light impinges from air onto a block of ice (n1.309) at a 56.0° angle of incidence. Assuming that this angle remains the same, find the difference ?2, ice-?2, water in the angles of refraction when the ice turns to water (n 1.333). ?2, ice-02, water . Additional Materials LO Section 26.2 5. 1 points C/10 26 P014 My Notes Ask Your Amber (n 1.546) is a transparent brown-yellow fossil resin. An Insect, trapped and preserved within the amber, appears to be 2.4 cm beneath the surface, when viewed directly from above. How far below the surface is the insect actually located? Additional Materials u Section 262

Explanation / Answer

4.

Using snell's law:

n1*sin A1 = n2*sin A2

n1 = refractive index of Air = 1

n2 = refractive index of ice = 1.309

A1 = Angle of incidence = 56 deg

A2 = angle of refraction for ice = ?

A2 = arcsin ((n1/n2)*sin A1)

Using given values:

A2 = arcsin ((1/1.309)*sin 56 deg) = 39.2967 deg

for water:

n2 = refractive index of water = 1.333

A1 = Angle of incidence = 56 deg

A3 = angle of refraction of water = ?

A3 = arcsin ((n1/n2)*sin A1)

Using given values:

A3 = arcsin ((1/1.333)*sin 56 deg) = 38.4575 deg

So

A3 - A2 = 39.2967 - 38.4575 = 0.8392 deg

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