Physics
Which of the following experiments analyzed the Fraunhofer lines of the solar spectrum?

Bunsen and Kirchhoff's experiment
Geiger and Marsdens experiment on scattering of alpha particles
Lamb-Rutherford experiment
Barkla's experiment on scattering of X-rays

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Physics
The law of conservation of energy states that

Energy can either be created or destroyed
Energy can either be created nor destroyed
Energy can neither be created nor destroyed
Energy can neither be created or destroyed

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