Question

Light of wavelength λ = 480 nm is incident upon two thin slits that are separated by a distance d = 25 μm. The light hits a screen L = 1.2 m from the screen. It is observed that at a point y = 5.4 mm from the central maximum the intensity of the light is I = 95 W/m2. Part (a) Write an equation for the phase shift between the light from the two slits at the observation point in terms of the given variables. Part (b) For the given data, what is the phase shift, in radians, between the light from the two slits at the observation point? Part (c) What is the intensity of the light at the two slits (I0) in watts per square meter? A soap bubble film with index of refraction n = 1.33 is illuminated perpendicularly with a light of wavelength λ = 325 nm. Part (a) Express the minimum thickness of the film, t, that results in constructive interference, in terms of n and λ. Part (b) Calculate the value of t, in nanometers.

          Light of wavelength λ = 480 nm is incident upon two thin slits
that are separated by a distance d = 25 μm. The light hits a screen
L = 1.2 m from the screen. It is observed that at a point y = 5.4
mm from the central maximum the intensity of the light is I = 95
W/m2.
Part (a) Write an equation for the phase shift
between the light from the two slits at the observation point in
terms of the given variables. 
Part (b) For the given data, what is the phase
shift, in radians, between the light from the two slits at the
observation point? 
Part (c) What is the intensity of the light at the
two slits (I0) in watts per square
meter? 
A soap bubble film with index of
refraction n = 1.33 is illuminated
perpendicularly with a light of
wavelength λ = 325 nm.
Part (a) Express the minimum thickness of the
film, t, that results in constructive interference,
in terms of n and λ. 
Part (b) Calculate the value of t, in
nanometers.

Added by Jeffery C.

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