Question

Why cannot we see the book placed behind wooden screen

Answer 1

tBecause the wooden screen is an opaque object not transparent if it would be transparent light would pass through it and you would be able to see the book but in this case it is an opaque object and opaque objects do not let light pass through them that is why you cannot see the book.

Answer 2

HERE IS YOUR ANSWER:-

We cannot see it because it is an opaque material from which light cannot pass .
Thus we cannot see the book placed behind wooden screen.

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