Waves

Question 1

Order of EM

Answer 1

Radio, microwaves, infrared, visible, ultraviolet, X-rays, gamma rays

Question 1

Speed of light

Answer 1

3.0 x 10¹⁸ms^-1

Question 2

Snell’s law

Answer 2

n₁ sin (i) = n₁ sin (r)

Question 3

Refractive index

Answer 3

n = sin(i) / sin (r)

Question 4

Critical angle

Answer 4

critical angle = sin^-1(n2 / n1)