GENERAL KNOWLEDGE

Detailed explanation-1: -The farther an object is from the pinhole, the smaller its image will be on the screen (see the diagram below). The focus, or sharpness of the image, is not affected by distance.

Detailed explanation-2: -When the size of the hole in a pinhole camera is made bigger, then the sharpness of the image obtained decreases. Also, the image becomes thick and blurry. This is because as the size of the hole increases, the amount of light entering the box increases disturbing the formation of the image.

Detailed explanation-3: -If the distance between the pinhole and screen is reduced, the size of the image will decreaseand the image will become bright since the light spreads over a small area.

Detailed explanation-4: -Answer: Solution: The hole is bigger than a pinhole, the image on the screen will be blurred because a bigger hole is equivalent to a large number of pinholes. That leads to overlapping of images which result in a blurred image.

Detailed explanation-5: -A pinhole camera is a simple camera without a lens but with a tiny aperture (the so-called pinhole)-effectively a light-proof box with a small hole in one side. Light from a scene passes through the aperture and projects an inverted image on the opposite side of the box, which is known as the camera obscura effect.