As the two refracting surfaces AB and AC are not parallel to each other, the emergent ray is also not parallel to the incident ray. Whereas, in a glass slab, the two refracting surfaces are parallel to each other which ...
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Sodium is so soft that can be cut using a knife. It reacts with oxygen or moisture present in air readily and reacts with water vigorously. Because of this sodium is stored in kerosene oil to prevent any reaction or ...
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