A soap bubble is 88.3 nm thick and illuminated by white light incident perpendicular to its surface. What wavelength (in nm) and color of visible light is most constructively reflected, assuming the same index of refraction as water (n = 1.33)? wavelength nm color ---Select---
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- ‘RR-1 Any material can separate the different wavelengths present in white light because the index of refraction for each wavelength is slightly different. For red light in water n=1.331, for blue light in water n=1.340. a) Find the angle from the normal in water for red light that enters the water from air at an angle of 80.00⁰. b) Find the angle from the normal in water for blue light that enters the water from air at an angle of 80.00⁰. air n=1.000 water: 80.00⁰ c) Draw a figure like the one shown and show the incident. ray and the refracted rays for both colors. Label the rays as "red" and "blue".Unpolarized light passes through two Polaroid sheets. If the transmission axisbetween the sheets is 30° what fraction of the original unpolarized light is transmitted through the second Polaroid sheet?a) 1/2b) 2/3c) 3/4d) none of these
- please answer both please(a) 2V and 5 Hz (b) 2V and 50HZ (c) 200V and (d) 200V and 50HZ For an optical fiber, which of the following is a correct statement about OPTICAL FIBER COATING refractive index? CORE (a) ncore> ncladding (b) ncladding> Ncore (c) ncore = Ndadding (d) ncore= 1 CLADDING bird The water waves in the figure are travelling at a speed of 2.5 m/s. The time that it takes to reach the bird is (a) 2s (b) 5 s 5 m- 23ws (c) 4 s (d) 1 s A device used to convert, electrical energy into mechanical energy is (a) generator (b) motor (c) transformer (d) optical fiber In a sound wave, the compression is a region of (a) high particle density and high pressure (b) high particle density and low pressure (c) Low particle density and low pressure (d) Low particle density and high pressure For an alternating current of amplitude 8A and frequency 50 Hz, the value of the current at a time 0.003s is (a) 6.46A (b) 0 A () 0.13 A (d) 7.60A