Regarding alimony in case of divorce.

No, it will not consider the fact of duration of marriage.

Income, expenditure, assets and liability clubbed with financial status of husband (at the time of marriage as well as presentation of petition for divorce) shall be considered for deciding alimony, when the parties cannot resolve amicably, through counselling or mediation proceeding in the court.

There is no fixed formula or strict rule for determining the alimony a husband must provide to his wife. Alimony can take the form of periodic or monthly payments or a one-time lump-sum amount.

When alimony is paid monthly, the Supreme Court of India has established a guideline of 25% of the husband's net monthly salary as the benchmark for the wife. There's no specific benchmark for one-time settlements, but it usually ranges between 1/5th to 1/3rd of the husband's net worth.

Courts consider various factors when calculating alimony, including the incomes and properties of both the husband and wife, their conduct, and mandatory deductions like income tax and loan payments to determine the husband's net income.

According to the law, if the wife earns more than the husband, the court may not award alimony, assuming she can support herself. However, if she has custody of minor children, she can claim maintenance for them.