Two schematic potential energy surfaces for bond bending motions are indicated as A & B in the accompanying diagram.

The out-of-plane C-H wags in iodoform and chloroform would respectively correspond to the potential energy surfaces

Concept:-

Explanation:-

The C-I bond is longer due large size of the iodine compare to Cl in chlorofom

The Cl-H are in proxmity such that they will experience more e-e repulsion so the hydrogen angle deviation is more in case of Cl-H bond in chlorofom.

Conclusion:-

Hence, the out-of-plane C-H wags in iodoform and chloroform would respectively correspond to the potential energy surfaces A and B