Question

derive an expression for refraction through rectangular glass slab​

Answer 1

Answer:

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Answer 2

Answer:

Lateral shift:

Lateral shift is the perpendicular distance between the incident and emergent rays when light is incident obliquely on a refracting slab with parallel faces.

Factors on which lateral shift depends are:

(1) Lateral shift is directly proportional to the

thickness of glass slab.

(ii) Lateral shift is directly proportional to the

incident angle.

(iii) Lateral shift is directly proportional to the refractive index of glass slab.

(iv) Lateral shift is inversely proportional to the wavelength of incident light.

Proof for i = e

Case-I:

For light going from air to glass at point E.

μa sin i = μg sin r ...............(1)

Case-II:

For light going from glass to air at point F.

μg sin r = μa sin e .......................(2)

From (1) & (2) we can say that i = e

→incident & emergent rays are parallel to each other.

Explanation:

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