C/P Section Bank #8 (Experimental setup)

[theonlytycrane]

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The given answer is (D). Is there a purpose for the energy meter in this setup, other than testing the photoelectric effect on a subsequent question?

I initially thought that the energy meter might read Em (laser pulse energy), but I guess we could get that from the laser itself.

 

[theonlytycrane]

bump 🙂

 

[salemstein]

Well if allyour energy went into breaking the chemical bonds, there will be none leftover togo to the detector