What will the angle of refraction be for a ray of light passing from air into sodium chloride crystal if the angle of incidence is 60.0 degrees? the index of the of refraction of sodium chloride is 1.53 a) 13 deg b) 22 deg c) 34 deg d)42 deg e) 48 deg

u i believe its 34

i = angle of incidence in air = 60 deg

r = angle of refraction in sodium chloride crystal = ?

n₁ = index of refraction of air = 1

n₂ = index of refraction of sodium chloride = 1.53

Using Snell's law

n₁ Sini = n₂ Sinr

1 Sin60 = (1.53) Sinr

0.866 =  (1.53) Sinr

Sinr = 0.866/1.53

Sinr = 0.566

r = Sin⁻¹(0.566)

r = 34  deg

Hence the correct choice is

C) 34 Deg

when a device is used in a circuit in which the voltage is 81 v, the current flowing through the device is 3 a. what is the resistance of the device?

a. 27 ω

b. 40.5 a

c. 243 ω

d. 243 a

the correct answer is a. 27

a sonic boom is a loud boom that breaks the sound barrier

explanation: