I was not introduced to the law of refraction. I did look ahead in my physics book catch a glimpse of what it is about. This is my attempt at just hucking the formulas.
\vartheta=arcsin(n2/n1)=arcsin(1.25/1.33)=1.222
\vartheta*\lambda=1.222*700=855.5nm
Is this correct?
Homework Statement
A very thin oil film(n=1.25) floats on water(n=1.33). What is the thinnest film that produces a strong reflection for visible light with a wavelength of 700nm?
Homework Equations
\lambda=(2nd)/(m-0.5)
d=(m-0.5)*(\lambda/2n)
thinnest film has m=1
The Attempt at a...
Homework Statement
A loudspeaker at the origin emits sound waves on a day when the speed of sound is 340 m/s. A crest of the wave simultaneously passes listeners at the coordinates (38m,0m) and (0m,29m). What are the lowest two possible frequencies of the sound?
Homework Equations...
Homework Statement
The length of a string attached to a pendulum is measured with a precision of (+or-)0.2. The time of the oscillation is measured to a precision of (+or-)0.1. How many periods must you measure so that the contribution of the uncertainty in time is smaller than the...
Homework Statement
The length of a string attached to a pendulum is measured with a precision of (+or-)0.2. The time of the oscillation is measured to a precision of (+or-)0.1. How many periods must you measure so that the contribution of the uncertainty in time is smaller than the...