The EMI for each lakh will be about Rs. 1000. For example if you take 10 lakh loan your EMI will be around Rs. 10,000. Thus, you may calculate your bearable limit of EMI just by deducting the amount you need to run your family from your net salary.
If you take a loan of Rs. 10 lakh the net salary will go down to (Rs. 21,000 – Rs. 10,000)=Rs. 11,000(approx).