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From which part of the lens, the ray of light passes without deviation?

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in Engineering Physics II by (679k points)
From which part of the lens, the ray of light passes without deviation?

(a) Optical centre

(b) Focus

(c) Centre of curvature

(d) Pole

I had been asked this question during an internship interview.

Asked question is from Lenses topic in division Optics of Engineering Physics II

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The correct answer is (a) Optical centre

To explain: Optical centre is the part of the lens, through which the ray of light passes without deviation. Focus is the point from where converging and diverging of beam of light takes place, when a narrow beam of light, parallel to principal axis and close to it, is incident on the surface of mirror.

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