The Minimum Wages Act, 1948, in India is a state-specific law, and the wages are determined by the respective state governments. In your case, if your employees are performing their duties in Noida and Ghaziabad, the minimum wages applicable would be as per the rules of the Uttar Pradesh government, as both these cities fall under the jurisdiction of Uttar Pradesh.
However, it's important to note that if your employees are also working in Delhi, the Delhi Minimum Wages Act would apply for the days they work there.
To ensure compliance, you should keep track of the days your employees work in each location and pay them according to the respective state's minimum wage laws for those days.
For the most accurate information, you should refer to the official websites of the respective state governments or the Ministry of Labour & Employment. You can also consult with a labor law expert or legal advisor to ensure full compliance with the law.