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Lens Maker's Formula

If the glass ...

Question

If the glass slab is of the following shape , and the experiment is performed as above , will the effects be same ? Here $S_{1}$ and $S_{2}$ are slab surfaces parallel to each other.

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Solution

In a glass slab opposite sides are parallel. The angle of refraction becomes the angle of incidence in the second face. The emergent ray bends in such a way that the angle of incidence becomes the angle of emergence. In this case the incident ray and the emergent ray will not be parallel to each other.

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Similar questions

Q. Two light rays of different wavelengths

λ_{1}

λ_{2}

fall respectively, on two glass slabs

S_{1}

S_{2}

normally and come out of the glass slabs simultaneously. If

λ_{1} > λ_{2}

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are the thickness of the glass slabs

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Q. A glass slab has two long parallel faces. Light ray is incident on the glass slab and trace of light ray is drawn. Now glass slab is shifted parallel to the parallel faces. What will be the effect on the trace of light?

In the above figure, there are two glass slabs of same refractive index. Hence, AB will be parallel to EF.

Q. A student performs an experiment with glass slab to trace the path of a ray of light entering from air into glass slab and emerging into air again. On looking carefully at the trace obtained on paper, he will observe that the emergent ray and the incident ray:
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(2) are diverging (moving away from each other)
(3) are perpendicular (at right angles to each other)
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Q. A small object A is placed on the principal axis of an equiconvex lens at a distance of

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