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Question

# Tony Stark wants to build an engine to propel his Iron Man suit; he wants to achieve an efficiency of 1.5 to make the suit lighter and faster! Which of the following laws of physics would he be violating?

A

1st law of Thermodynamics

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B

2nd law of Thermodynamics

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C

Both (a) and (b)

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D

Neither (a) and (b)

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Solution

## The correct option is C Both (a) and (b) Efficiency greater than 1 means that the work output of the engine is greater than the heat input! This violates the conservation of energy, or the 1st law of thermodynamics. Also the 2nd law prohibits the efficiency to be equal to 1, hence it is also being violated.

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