Waves And Optics

Question 1

What is energy equation?

Answer 1

E = hf

Question 2

What is snells law (full)?

Answer 2

n1/n2 = sinx2/sinx1 = v2/v1 = lambda1/ lambda2

Question 3

What is the equation for critical angle?

Answer 3

n = 1 / sinx^c

Question 4

What is the equation for a converging lens?

Answer 4

1/f = 1/v + 1/u

Question 5

What is the equation for a diverging lens?

Answer 5

1/f = 1/v - 1/u

Question 6

What is the equation for magnification?

Answer 6

h’/h = -v/u

Question 7

What is the equation for the speed of light?

Answer 7

c = f lambda

Question 8

What is the general equation of a wave?

Answer 8

X = Acos(wt + thi)

Where thi is phase shift or phase difference

Question 9

What are the equations for w?

Answer 9

w = 2pi f

w = 2pi / T

Question 10

What is the equation for k?

Answer 10

2pi / lambda

Question 11

What is the general equation of a standing wave?

Answer 11

y = Acos( kx -wt + thi)

Question 12

What is the useful equation for harmonics?

Answer 12

Lambda subscript n = 2L/n

f subscript n = v/2L

Question 13

What is the equation for string speed?

Answer 13

Vstring = root T/mew

Where mew is the mass per unit length

Question 14

What is the half angle formula?

Answer 14

cosA + cosB = 2cos[(A+B)/2]cos[(A-B)/2]

Question 15

What is the equation for multi beam intensity?

Answer 15

Total I = 4I cos^2(thi/2)

Where I is the intensity of a singular beam

Question 16

what is Young’s slit equation?

Answer 16

dsinx = m lambda (constructive)

dsinx = (m + 1/2) lambda (destructive)

Question 17

What is the equation for angular size?

Answer 17

h’ = f alpha

Where alpha = angular size
And f = focal length