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You are here: Home / Class 10 / Light-Reflection and Refraction / Refraction through a Glass Slab

Refraction through a Glass Slab

Last Updated on May 4, 2020 By Mrs Shilpi Nagpal 1 Comment

Question 1 What is meant by lateral shift?

Question 2 The refractive index of dense flint glass is 1.65 and for alcohol it is 1.36,with respect to air.What is the refractive index of the dense flint glass with respect to alcohol?

Question 3 Draw a diagram showing refraction of light through a glass slab?

Refraction through a Glass Slab

Refraction through a glass slab

n21 = Sin i / Sin r

n12 =  Sin r / Sin i

Sin i / sin r = sin e / Sin r

i=e

∠i = ∠e

Incident ray and emergent ray are parallel to each other.The perpendicular distance between the original path of incident ray and emergent ray coming out of glass slab is called Lateral shift(d).
d is directly proportional to thickness of glass slab,angle of incidence,n of glass slab.

d is inversely proportional to incident light.

Filed Under: Light-Reflection and Refraction, Class 10 Tagged With: emergent ray, incident ray, lateral shift

About Mrs Shilpi Nagpal

Author of this website, Mrs Shilpi Nagpal is MSc (Hons, Chemistry) and BSc (Hons, Chemistry) from Delhi University, B.Ed (I. P. University) and has many years of experience in teaching. She has started this educational website with the mindset of spreading Free Education to everyone.

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  1. Saksham jain says

    December 1, 2019 at 10:34 pm

    Very useful site and I want to thank the author.

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