Homework Statement
A grating has exactly 7000 lines uniformly spaced over 2.67 cm and is illuminated by light from a mercury vapor discharge lamp. What is the expected angle for the third-order maximum of the green line ( = 546 nm)?
Homework Equations
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The Attempt at a Solution...
Homework Statement
In a double-slit interference experiment, the wavelength is 579 nm, the slit separation is 0.12 mm, and the screen is 30.0 cm away from the slits. What is the linear distance between adjacent maxima on the screen? [Hint: Assume the small angle approximation is justified and...
Homework Statement
A soap film has an index of refraction n = 1.90. The film is viewed in reflected light.
(a) At a spot where the film thickness is 910.0 nm, which visible wavelengths are missing in the reflected light? (Give the three wavelengths which correspond to the lowest such m...
Homework Statement
A camera lens (n = 1.90) is coated with a thin film of magnesium fluoride (n = 1.40) of thickness 90.0 nm. What wavelength in the visible spectrum is most strongly transmitted through the film?
Homework Equations
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The Attempt at a Solution
I have no idea...
Homework Statement
Two incoherent EM waves of intensities 7I0 and 13I0 travel in the same direction in the same region of space. What is the intensity of EM radiation in this region?
Homework Equations
The Attempt at a Solution
I have tried using I = I1 + I2 + ( 2* square root of...
Homework Statement
A steep cliff west of Lydia's home reflects a 1205 kHz radio signal from a station that is 63 km due east of her home. If there is destructive interference, what is the minimum distance of the cliff from her home? Assume there is a 180° phase shift when the wave reflects...