In the figure, a light wave along ray r, reflects once from a mirror and a light wave along ray ro reflects twice from that same mirrorand once from a tiny mirror at distance L from the bigger mirror. (Neglect the slight tilt of the rays.) The waves have wavelength 616nm and are initially exactly out of phase. What are the (a) smallest, (b) second smallest, and (c) third smallest values of L that result inthe final waves being exactly in phase?(a) Number308UnitsThis answer has no units(b) Number616UnitsThis answer has no units(c) Number924UnitsThis answer has no units

Concept used: The condition for length for waves to be in in phase is given by: L=nλ2 where:…

Answered: In the figure, a light wave along ray r…

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In the figure, a light wave along ray r, reflects once from a mirror and a light wave along ray r2 reflects twice from that same mirror and once from a tiny mirror at distance L from the bigger mirror. (Neglect the slight tilt of the rays.) The waves have wavelength 660 nm and are initially exactly out of phase. What are the (a) smallest, (b) second smallest, and (c) third smallest values of L that result in the final waves being exactly in phase? (a) Number i Units nm (b) Number Units nm (c) Number i Units nm
In conventional television, signals are broadcast from towers to home receivers. Even when a receiver is not in direct view of a tower because of a hill or building, it can still intercept a signal if the signal diffracts enough around the obstacle, into the obstacle’s “shadow region.” Previously, television signals had a wavelength of about 50 cm, but digital television signals that are transmitted from towers have a wavelength of about 10 mm. (a) Did this change in wavelength increase or decrease the diffraction of the signals into the shadow regions of obstacles? Assume that a signal passes through an opening of 5.0 m width between two adjacent buildings.What is the angular spread of the central diffraction maximum (out to the first minima) for wavelengths of (b) 50 cm and (c) 10 mm?
Problem 1: You want to test a special watertight monochromatic light source in an un- derwater environment. If the light source shines its beam of electromagnetic radiation into your eyes when you and the light source are above the water, with both your eyes and the light source immersed in air, the beam appears to your eyes to have a deep violet color. The index of refraction of water is about 1.33 What color, if any, would your eyes perceive the beam to have when you and the light source are submerged in water – and why? (A) No color. The beam would become invisible under water because its wavelength in water is shorter than in air, corresponding to a wavelength of ultra-violet light. The beam's wavelength in the water determines its visibility to the eye under water, and ultra-violet light is not visible to the human eye. (B) Same color as in air, above the water, i.e., deep violet. Under water, the beam would have the same wavelength as in air. The beam's wavelength in the water…
The light from a red laser pointer has wavelength6.35 * 10^-7 m in vacuum. When this light is sent into a transparentmaterial with relative permeability 1.00, its wavelength decreases to3.47 * 10^-7 m. Find the frequency of the light in vacuum
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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 °?