An object is placed at the Centre of curvature of a concave
mirror. The image produced by the mirror is located:
Electron gun has an electrode called for controlling the
flow of electrons in the beam:
A converging mirror with a radius of 20cm creates a real
image 30 cm from the mirror. What is the object distance:
The critical angle for a beam of light passing from water
into air is 48.8 degrees. This mean that all light rays with an angle of
incidence greater than this angle will be:
