The tendency of incident light rays to follow these rules is increased for lenses that are thin. For such thin lenses, the path of the light through the lens itself contributes very little to the overall change in the direction of the light rays. We will use this so-called thin-lens approximation in this unit.
Hindi got its name from the Persian word Hind, meaning 'land of the Indus River'. Persian speaking Turks who invaded Punjab and Gangetic plains in the early 11th century named the language of the region Hindi, 'language of the land of the Indus River'.
Hindi in its different forms is the common language running through the region. In this article, we look at some of the common birds found in India and their common names.The name of the bird in Hindi is in italics and how it would be written in Hindi is in parentheses.he names of animals in Hindi can be read at: Hindi Language â Learning Names of Animals. A list containing the names for download is also available at Learning Names of Birds in Hindi. The Hindi word for: 1  Bird: Pakshi ( 2 à¤à¥à¤·à¥). 3  Cock: Murga (à¤®à¥à¤°à¥à¤à¤¾). 4  Crane: Saras (à¤¸à¤¾à¤°à¤¾à¤¸). 5  Crow: Kauwa (à¤à¥à¤µà¤¾). 6  Cuckoo: Koel (à¤à¥à¤¯à¤²).