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AthenAt5607
15.04.2020 •
Physics
Using monochromatic light of 410 nm wavelength, a single thin slit forms a diffraction pattern, with the first minimum at an angle of 40.0° from central maximum. The same slit, when illuminated by a new monochromatic light source, produces a diffraction pattern with the second minimum at a 60.0° angle from the central maximum. What is the wavelength of this new light?a. 256 nm b. 283 nm c. 307 nm d. 329 nm e. none of these
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Ответ:
c. 307 nm
Explanation:
angular position of first dark fringe = λ / d , λ is wavelength and d is width of slit .
(40 x π ) / 180 = 410 / d
angular position of second dark fringe = 2 x λ / d , λ is wavelength and d is width of slit .
(60 x π ) / 180 = 2 x λ / d
Dividing these equations
60 / 40 = 2 x λ / 410
λ = 307.5 nm.
Ответ:
Elastic Energy
Explanation:
If we tightly coiled the watch metal wire, then it stores the Elastic Potential energy. The metal spiral wire is in the form of spring and when we compress it stores Elastic potential Energy because work is done to distort the shape of spring.
The metal wire has some spring constant which opposes the applied force while coiling it and thus wire also applies a minimal reaction force in the response of action force.