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Construct the reflected wavefront when a...

Construct the reflected wavefront when a plane wavefront is incident on a plane reflecting surface. Hence, explain the laws of reflection. Why does an expanding spherical wave continue to expand outward from the source?

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Knowledge Check

  • Unpolarized light is incident on a plane glass surface. The angle of incidence so that reflected and refracted rays and perpendicular to each other, then

    A
    `"tan"i_(beta)=(mu)/(2)`
    B
    `"tan"i_(beta)=mu`
    C
    `"sin"i_(beta)=mu`
    D
    `"cos"i_(beta)=mu`

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