A glass plate 2.50 mm thick, with an index of refraction of 1.40, is placed between a point source of light with wavelength 540 nm (in vacuum) and a screen. The distance from source to screen is 1.80 cm. How many wavelengths are there between the source and the screen?
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A glass plate 2.50 mm thick, with an index of refraction
of 1.40, is placed between a point source of light with wavelength
540 nm (in vacuum) and a screen. The distance from source to screen is
1.80 cm. How many wavelengths are there between the source and the
screen?
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- 14. The figure shows a ray of light that passes from the white material A (with index of refraction nA = 1.1) into the grey material B. (a) In which material does the light travel faster? A) Material A B) Material B (b) What is the index of refraction of material B? 30° 60° A 70° B 20°What is the refractive index of the material in which the speed of light is 1.28×108 m/s. (c = 3.0 × 108 m/s) O 1.12 O 1.20 1.80 1.65 O 2.34A monochromatic beam of light in air has a wavelength of 589 nm in air. it passes through Carbon disulfate (n=1.63) and then through glass (=1.52). what is its wavelength in glass? Group of answer choices 421 nm 388 nm 487 nm 361 nm
- Two antennas located at points A and B are broadcasting radio waves of frequency 104.0 MHz. The signals start in phase with each other. The two antennas are separated by a distance d = 8.7 m. An observer is located at point P on the x axis, a distance x = 110.0 m from antenna A. The points A, P, and B form a right triangle. Now observer P walks along the x axis toward antenna A. What is P's distance from A when they first observe fully constructive interference between the two waves?A light ray strikes a 10-cm-thick glass pane, making a 30° angle to the perpendicular to the glass as it enters. When the ray reemerges into air on the other side of the pane, how much has it been displaced from where it would have been if the glass weren't there (this is the distance d indicated in the figure below)? A 1.25 cm B 2.23 cm C 1.94 cm D 2.46 cmJimin applies a coating on a piece of glass to reduce its reflectivity when light with a frequency of 5.75 x 10¹4 Hz shines on it. If the material has an index of refraction of 1.375 and the glass has an index of refraction of 1.537, what is the minimum thickness the coating should have? (c = 3.00 x 108 m/s) 60.0 nm 145 nm 94.9 nm 65.2 nm
- How many centimetres is the light ray displaced after passing through the 5.50 cm thick sheet of material (n = 1.30) with an incident angle of θ = 34.0 °?A coating is being applied to reduce the reflectivity of a pane of glass to light with a frequency of 4.14 × 10¹4 Hz that is incident normally on the pane. If the material has an index of refraction of 1.34 and the glass has an index of refraction of 1.537, what is the minimum thickness the coating should have in nanometers? Please keep one decimal place in your answer. (c = 3.00 × 108 m/s)