4. Consider the Michelson interferometer shown in Fig. 2. In one of the optical branches, there is an air-tight chamber of length d= 4 cm. When the gas is evacuated from the chamber, the interference pattern shifts by 3000 fringes at a wavelength of 620 nm. Determine the index of refraction of the gas inside the chamber. Mirror Source Mirror To vacuum pump Fig. 2

Q: c) In a Young's double slit experiment, light of frequency 4.85 x 10¹4 Hz passes through a narrow…

A: Note: As you have posted multiple questions and according to bartleby guidelines we are opted to…

Q: A grating is illuminated by light of two wavelengths 500. nm and 450. nm. When the third order…

A: If you have any questions let me know in comment box thankyou for your question.

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A: Thickness, t = 1.5 μm Shifts, ∆y1 = 7.5 fringes ∆y2 = 9 fringes Thickness of second film, t2 = ?

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A:

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Q: How many fringes

A:

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Q: 9)

A: Refer explanationExplanation:

Q: I need help with questions #2.

A: 2. Consider the wavelength of the light beam be λ, that is given as,

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A: Given:λ = 610 nm = 610×10-9 mRefractive index, n1 = 1.5                               n2 = 1.6

Q: 1. Calculate the number of allowed modes in a multimode optical fiber of radius a = 50-micrometer.…

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Interference of Light

The word "constructive" signifies addition in interference. Constructive interference occurs when the path of the waves that start from the slit differs by 1 entire wavelength or in the intervals of the same. Hence, the waves that are presented on the screen are in phase (crest to crest/trough to trough). The waves interfering constructively forms bright fringes on the screen.