A light source of unknown wavelength is incident normally on a glass plate which is placed over another glass plate at an angle 0.8deg. There is an air film of varying thickness created between them. If the two consecutive bright fringes are obtained at 3mm distance what is the wavelength of the light. The interference pattern considered above is the interference of reflected rays.The length of the glass plate is 10cm.

A light source of unknown wavelength is incident normally on a glass plate which is placed over another glass plate at an angle 0.8deg. There is an air film of varying thickness created between them. If the two consecutive bright fringes are obtained at 3mm distance what is the wavelength of the light. The interference pattern considered above is the interference of reflected rays.The length of the glass plate is 10cm.

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Concept explainers

Diffraction of light

In physics, the term diffraction is defined as the bending of light around the corners of the obstacle. As a light ray passes by an aperture, it bends around the edges or through slits, it spreads out through a narrow opening. The diffracted light will produce fringes of bright and dark or colored bands which are labeled as a diffraction pattern.

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5. A light source of unknown wavelength is incident normally on a glass plate which is placed over another glass plate at an angle 0.8deg. There is an air film of varying thickness created between them. If the two consecutive bright fringes are obtained at 3mm distance what is the wavelength of the light. The interference pattern considered above is the interference of reflected rays.The length of the glass plate is 10cm.

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