A man stands 4m in front of a plane mirror. If the mirror is moved 1m towards the man, the distance between him and his new image is?
The inside portion of part of a hollow metal sphere of diameter 20cm is polished. The portion will therefore form a?
Which of the following descriptions of the image formed by a plane mirror is not correct. the image is----
An object is placed at different distances, u, from a converging lens of focal length, 15.0cm. For what value of u does the lens act as a microscope?
The power of the lens is +2.5D. What is the radius of the curvature?
