InterviewSolution
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InterviewSolution
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Why Are Parabolic Mirrors Used In Search Light And Not Concave Spherical ? |
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Answer» Because a PARABOLIC mirror is free from spherical aberrations. So a source of light PLACED at the FOCUS of parabolic mirror produces a PARALLEL beam of light which easily visible even from a long DISTANCE. Because a parabolic mirror is free from spherical aberrations. So a source of light placed at the focus of parabolic mirror produces a parallel beam of light which easily visible even from a long distance. |
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