Dear aspirant,

Following subjects of 11th and 12th physics are going to be important in in mechanical engineering however the subjects would be much more complicated as they are in 12th.

• Thermodynamics
• Rigid body dynamic
• Calculus
• Fluid mechanics
• Kinetics

Allof the subject will be expanded into multiple disciplines in your engineering like heat and mass transfer fundamental of machines fluid mechanics etc.

Also the calculus would be further expanding to double and triple integration and partial differentiation.

Hope this helps. Thank you.

Class 12th Physics is very basic as far as engineering is concerned so there won't be any segregation based on what is important for mechanical engineering. All chapters are in some form or other are important for Mechanical engineering and you should not do a mistake by ignoring any chapters.

If mechanical engineering si concerned then it will  be largely mechanics around which it revolves but it does not matter because a lot of different concepts both from Physics and Chemistry will come.