In Fig. 34-31, an isotropic point source of light S is positioned at distance d from a viewing screen A and the light intensity IP at point P (level with S) is measured. Then a plane mirror M is placed behind S at distance d. By how much is IP multiplied by the presence of the mirror?

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anonymous · Answer

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anonymous · Answer

Any help would be appreciated.

anonymous · Answer

Never mind. I solved it :) .

jusaquikie · Answer

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anonymous · Answer

haha. I looked at their work but it makes no sense so I did it my own way and got it correct :) .

jusaquikie · Answer

that's the best way, trial and error lol good luck.