How much maintenance or alimony may be awarded

You have to pay maintenance to your wife and child.  You can defend what she asks as maintenance for her and her child.  This depends on the merits of the case.

Both the parties shall have to file their affidavit of income, expenditure, assets and liabilities in terms of Supreme Court judgment in the case titled "Rajnesh Vs Neha" 2021 

As suggested by experts above, you have to pay maintenance to your wife and child, despite the fact that she is educated. Your basic salary of 36,000 might be considered the base for assessment, but the court might also take into account the overall financial capacity, including the farm lands and the flat you own. The farm lands jointly held with your brother and the property in your mother's name may not be directly considered as your assets for maintenance purposes, but they could be evaluated for overall financial standing.

Regarding whether to pay monthly or as a lump sum, it often depends on the court's discretion and the circumstances of the case. Sometimes, a lump sum payment might be more favorable as it concludes the financial obligation immediately, but monthly payments can also be ordered, providing regular support.

However, the exact amount cannot be predicted without a comprehensive review of all financial aspects and circumstances of the case. For your reference, you can also refer to the maintenance provisions under Hindu Law and CrPC.