A sample of an ideal gas in a cyclinder ...

A sample of an ideal gas in a cyclinder is compressed adiabatically to `1/3rd` of its volume. Will final pressure be more or less than `3 times` the initial pressure?

Final pressure will be three times less than initial pressure

Final pressure will be three times more than initial pressure.

Change in pressure will be more than three times the initial pressure.

Change in pressure will be less than three times the initial pressure.

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