When an object is placed between two parallel mirrors, then number of images formed are
With the help of a diagram, explain why the image of an object viewed through a concave lens appears smaller and closer than the object.
When a beam of light is passed through a colloidal solution and observed under ultramicroscope, we can see _____________.
An object is seen through a simple microscope of focal length 20 cm. Find the angular magnification produced, if the image is formed at 30 cm from the lens.
Schottky defect to crystals is observed when
It was observed that when the distance between an object and a lens decreases, the size of the image increases. What is the nature of this lens? If you keep on decreasing the distance between the object and the lens, will you still able to obtain the image on the screen? Explain