When light enters a pair of glasses, it when it hits the glass. a) conducts b) diffracts c) reflects d) refracts

D) refracts

It refracts due to the uneven deviations on the surface of the glass. But, in some cases if the surfaces of the glass is even the light rays will pass straight through the glass without refracting.

metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

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