Problem - 1
Given is :-
Light intensity seen by observer B is I
Now,
The light intensity sees by observer A is
P is the power of bulb which is constant at all distances, thus
by plugging the values we get
which gives us
This is the intensity of light seen by observer A
hence,
option - C is correct answer.
Observer is 3.0 m from a tiny light bulb and observer Bis 12.0 m from the same bulb. Assume that the light spreads...