Question

an incident ray passing through the optical centrr of a concave lens after refraction through it will​

Answer 1

All the light rays after passing through the concave lens diverge and when produced backwards appear to meet at a point on the principal axis of the lens. This point is known as principal focus of a concave lens. Thus refracted rays appear to diverge from the focus. Concave lens is opposite to convex lens.

Answer 2

Answer:

Deflection occurs whenever light exits glass into air or enters glass from air, unless the light is at right angles to the glass. Thus your question is not technically correct. Light is deflected, but if it is not at right angles, and it passes through the optical center, it emerges parallel but offset some amount.

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