Pyroelectric substances produce electricity by applying pressure? (T/F)?
True
False
By applying heat pyroelectric substances produce electricity but not by applying pressure.
Piezoelectric substances by applying pressure produce electricity (T/F).
Consider the following statements.
I. Gaseous substances whose critical temperatures are above room temperatures can be liquefied by applying sufficient pressure to the gas.
II. Gaseous substances whose critical temperatures are below room temperature can be liquefied by the application of pressure and lowering of temperature below Tc.
Select the correct alternate.