abstract class and derived class

[zio_mangrovia]

Given this example, because I need to confirms my ideas:

class Father {
public:
    virtual void pureF() = 0; 
    virtual void simpleF() {}
};

class Child : Father {
public:
    virtual void pureF();
};

1st question:
If I understood correctly, in this example if I was not interesting to define SimpleF in the derived class, It's mandatory to define It in the base class.
If I had this instruction in Father class:

virtual void simpleF();

I will get error because derived class inherits simpleF but this function would not be defined in any class. Right ?

2nd question:
Father class is abstract so it's not possible to create any instance of base Class.
Derived class inherits both pureF and simpleF function.
If I didn't redefine pureF function in the derived class, Child class would inherit this virtual function which would turn derived class to abstract class and I should have to add new derived class where to define function, right ?
This example is only for education purpose.
Thanks