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What is a wavelength of induced radiation quantum if 2-nd order diffraction maximum change on distancе 3.5 сm from сentral and distance between screen to diffraction lattice 0.5 m? Lattice period 0.01 mm.

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4 votes

Answer:

λ = 3,5 10⁻⁷ m

Step-by-step explanation:

El fenómeno de difracción es descrito por la expresión

a sin θ = m λ

usemos trigonometría para encontrar el sino

tan θ = y/L

tan θ = sin θ /cos θ

los experiemtos de difraccion ocurran para langulos pequeños

tan θ = sin θ

sin θ =y/L

substituimos

a y/L = m λ

λ = a y /m L

calculemos

λ = 0,01 10-3 0,035 / 2 0,5

λ = 3,5 10⁻⁷ m

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