collision script to next scene

im trying to make a script that when you collide with a game obj you are transferred to a new scene… how do i write this?

You can detect collision by having

OnCollisionEnter(Collision c)

method in your MonoBehaviour. When you detect collision you can change scene with

Application.loadLevel("level name")

method

As suggested by @Lo0NuhtiK you need to check when your object collides. To do that, you do exactly what he said. You can also filter collision objects by tag or name:

function OnCollisionEnter(other : Collision){
    if(other.gameObject.name == "SomeObject"){
        Application.loadlevel("Level name");
    }

    if(other.gameObject.tag == "SomeTag"){
        Application.loadlevel("Level name");
    }
}