Joining/Combining two models for Transfer Leaning in KERAS
The issue has been resolved.
I used the model.add()function and then added all the required layers of both Model 1 and Model 2.
The following code would add the first 10 layers of Model 2 just after the Model 1.
for i in model2.layers[:10]:
    model.add(i)
How can we join/combine two models in Transfer Leaning in KERAS? 
I have two models:
model 1 = My Model
model 2 = Trained Model
I can combine these models by putting the model 2 as input and then passed its output to the model 1, which is the conventional way.  
However, I am doing it in other way. I want to put the model 1 as input and then passed its output to the model 2 (i.e. trained model one).