(i) Light passes through a rectangular glass slab and through a triang

1.	(i) 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 ?(ii) Ranbir claims to have obtained an image twice the size of the object with a concave lens. Is he correct ? Give a reason for your answer.
Answer» (i) In a rectangular glass slab, the emergent ray is parallel to the incident ray hut 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. (ii) No. By the concave lens only small size upright images obtained.

(i) 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 ?(ii) Ranbir claims to have obtained an image twice the size of the object with a concave lens. Is he correct ? Give a reason for your answer.

Answer»

(i) In a rectangular glass slab, the emergent ray is parallel to the incident ray hut 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.

(ii) No. By the concave lens only small size upright images obtained.

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