Which of the following plots is/are correct?

Shown below are the black body radiation curves at temperature T_(1) and T_(2) (T_(2) gt T_(1)) . Which of the following plots is correct?

Shown below are the black body radiation curves at temperature T_(1) and T_(2) (T_(2) gt T_(1)) . Which of the following plots is correct?

For gaseous state at constant temperature which of the following plot is correct?

Which of the following plots are correct for an ideal gas ?

Which of the following plots are correct for potential energy of butane as a function about C_(2)-C_(3) bond ?