Question

10(c). Name the cause of change which take place during the formation of image of a person on a photographic film.

Answer 1

• The formation of image from a photographic film can be done by putting it under light.
• When photographic film is exposed to light, it will form an invisible latent image.
• With a range of densities and shades of gray, this latent image can be converted to visible image.
• This process is called photographic process and this is a irreversible change.
• Hence, this change can be caused by light.