Physics
Which of the following is not a valid conservation law of classical physics?

Law of conservation of current
Law of conservation of energy
Law of conservation of charge
Law of conservation of angular momentum

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Physics
In total internal reflection, the light travel from

Denser to rarer medium and it occurs with no loss of intensity
Denser to rarer medium and it occurs with loss of intensity
Rarer to denser medium and it occurs with loss of intensity
Rarer to denser medium and it occurs with no loss of intensity

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