ICSE Class 10 Physics 2014 Solved Paper

Question : 35 of 66

Marks: +1, -0

Light passes through a rectangular glass slab and through a triangular glass prism. In what way does the direction of the two emergent beams differ and why?

Solution:

In a rectangular glass slab, the emergent ray is parallel to the incident ray but they are not along the same line whereas in a prism the emergent ray is not parallel to incident ray.
Because in a glass block the two surfaces at which refraction occurs is parallel to each other.

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