The height requirement for the UPSC (Union Public Service Commission) examination varies depending on the post applied for. The general requirement for candidates is that they should possess a minimum height of 165 cm (male) and 150 cm (female). However, there are certain relaxations and exceptions provided for different categories and posts. Let's discuss the details below:

1. General Height Requirement:
- Male Candidates: The minimum height required for male candidates is generally 165 cm (5'5").
- Female Candidates: For female candidates, the minimum height required is generally 150 cm (4'11").

2. Height Relaxation for Reserved Categories:
- Scheduled Castes (SC) and Scheduled Tribes (ST): There is a relaxation of 5 cm in height for male and female candidates belonging to SC and ST categories. Therefore, the minimum height requirement for SC/ST male candidates is 160 cm and for SC/ST female candidates is 145 cm.
- Other Backward Classes (OBC): OBC candidates usually do not have any specific height relaxation. They are required to fulfill the general height requirements.
- Persons with Disabilities (PwD): PwD candidates are exempted from the height requirement as they are considered for various posts based on their specific disabilities and not on physical attributes.

3. Height Requirement for Specific Posts:
- Indian Police Service (IPS): For male IPS candidates, the minimum height requirement is generally 165 cm (5'5"). However, for male candidates belonging to Gorkhas, Nepali, Assamese, and other tribal communities, the minimum height is relaxed to 160 cm (5'3"). Female IPS candidates are generally required to have a minimum height of 150 cm (4'11").
- Central Armed Police Forces (CAPF): The height requirement for male CAPF candidates is usually 165 cm (5'5") and for female candidates, it is 157 cm (5'2").
- Indian Administrative Service (IAS) and Other Civil Services: The height requirement for IAS and other civil services posts is the same as the general height requirements mentioned earlier.

It is important to note that these height requirements are subject to change, and candidates should refer to the official UPSC notifications and guidelines for the latest information regarding height criteria for different posts.