Knowledge in Lines and angles
Lines and angles
Lines and angles
Aptitude Mantra
Point , Crossing and Yard Railway
Point where the connection of two railway are joined and crossing interchange of rail tracks and yard is made for repair the the line which may break
Aman Tripathi
Focal length of lens
The focal length of the lens is the distance between the lens and the image sensor when the subject is in focus, usually stated in millimeters (e.g., 28 mm, 50 mm, or 100 mm). In the case of zoom lenses, both the minimum and maximum focal lengths are stated, for example 18–55 mm.
Tharshini Ravikumar