If you are reading a book and you move twice as far away from the light source, how does the brightness at the new distance compare with that at the old distance? it is
a.
one-eighth as bright.
c.
one-half as bright.
b.
one-fourth as bright.
d.
twice as bright.

Brightness decreases with inverse proportion squared, so (let I stand for intensity and a be some proportionality constant):

If we increase our distance by a factor of 2 then

Thus the answer is b.

what question you dont ask a question

explanation:

c because the action was the roller coaster reaches bottom of hill (action) reaction would be blood tends to drain away from head

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