create.rb

testObj = SomeModule::Test.new  
testObj.create_class "airtel"  # Creates a new class Airtel  
Airtel.new.hello_class  # prints Hello from new class

inherited.rb

SomeModule.const_set(name.classify,  
  Class.new(SomeModule::Test)  do  
    def hello_class  
      p self.class.ancestors  
      p "Hello from new class"  
    end  
  end  
)

inmodule.rb

SomeModule.const_set(name.classify,  
  Class.new  do  
    def hello_class  
      p "Hello from new class"  
    end  
  end  
)

simple.rb

module SomeModule
  class Test
    def create_class name

      Object.const_set(name.classify,
        Class.new  do  
          def hello_class  
            p "Hello from new class"  
          end  
        end  
      )  

    end  
  end  
end