What are real and virtual images ? How will you find out whether an image is real or virtual ? Can a virtual image be obtained on a screen ?
An aircraft flying at a altitude of 2000 metre, takes the photographs of the ground by a camera with a lens of focal length 0.5 m. The size of the film in the camera is 12 cm xx 12 cm . What area of the ground can be photographed by this camera at any time ?
STATEMENT- 1 A virtual image can be photographed. STATEMENT 2 Only a real image can be formed on a screen
A virtual image can be obtained on a screen.
When would virtual image be produced by convex lens? Why can virtual image be not obtained on a screen?
Photograph of the ground ar taken form an air-craft ,flying at an altutude of 2000m by a camera with a lens of focal length 50cm .The size of the film in the camera si 18xx18cm .What area of the ground can be photography by this camera at any one time.
