Why light travels undeviated throgh the optical centre

Asked by ayush421301 | 9th Nov, 2019, 12:56: AM

Expert Answer:

At optical centre , small part of the lens is having negligible curvature and behaving like glass slab.
 
We know, when light enters a glass slab, there is no deviation after refraction,
but only lateral shift that depends on thickness of slab.
 
Hence when light enters optical centre of lens, since the thickness of lens is small, there is no deviation of light

Answered by Thiyagarajan K | 9th Nov, 2019, 08:25: AM

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