A light source of wavelength 499 nm is used to normally illuminate Newton's ring setup. If the diameter of the eloventh bright ring is 8.6 mm, then find the thickness (in micrometers) of the air wedge (air tilm between the two surfacos). (Note: You need the answer to this question to answer the next questions) 2.6198 O 2.7445 O 0.0022455 O 2.6198e-6 O 2.7445e-6O
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- Write down an expression for the angle of the first minimum of diffraction of light of wavelength A by a circular aperture of diameter d. Please use appropriate algebraic symbols for multiplication (* for a × b), division (/ for a/b), exponents (a^b for a³), square root (sqrt(a*b/c) for √a × b/c) etc. For Greek letters use their names e.g. "theta" (without the quotes) and for trigonometric functions use "cos", "tan", "sin", "asin" (for arc sine etc., without the quotes). Thus for Acose use A* cos theta or for A*sin¹ (a+b) use A*asin(a+b) etc. Please use the "Display response" button to check you entered the answer you expect. 0= Display responseDetermine the maximum distance at which an observer can still distinguish two small bright sources 12.5 mm apart emitting the light of 452 nm, given that the eye pupil size is around 4.0 mm. Give your answer in SI units.Course: Electromagnetism. Consider a Helium Neon (HeNe) laser that emits at 632.8 nm (red light). This is inserted into an optical fiber with a core diameter of 62.5 µm. A) Determine and explain if the optical fiber operates in a multimode or single mode condition. Given the above result explain: B) What does it imply to operate in said mode condition? C) What changes should be made if you wanted to operate in the other mode condition? D) What other considerations should be taken into account when deciding whether to make those changes? (example: costs, technical considerations).
- Explain the existence of the Arago spot by means of the Huygens-Fresnel theory. Would the spot be present if the light beam was incoherent?please solve asap.An astronomer is calibrating a spectrometer that uses a dittraction grating to separate light in order ot increasing wavelength (2,, 1e, and 1). She observes three distinct tirst-order spectral lines at the following respective angles 0, (where m denotes order). 8, = 12.7°, 8, = 14.2°, 0, = 14.9c (a) If the grating has 3,680 qrooves per centimeter, what wavelength (in nm) describes each of these spectral lines? at 8, - 12.70 nm at 6, = 14.2° nm al 8, = 14.9° d = (b) At what angle (in degrees) would each of these lines be found in the second-order spectrum? for 2, 0, - for å, 0, for 2. 8, =
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