Question

State the effect on the image formed by a pinhole camera if the length of the pinhole camera is increased.

Answer 1

Hint: when you place an object ahead of the pinhole camera, a transparent image is made on the screen. If the space between the pinhole and screen is increased, the image size will increase and therefore the image however will get less bright since the sunshine spreads over a large area.

Complete step by step answer:
1. Once you place an object ahead of the pinhole camera, a transparent image is made on the screen. If the space is increased, the image pinhole and screen is increased, the image size will increase and therefore the image however will get less bright since the sunshine spreads over a large area.
2. If the dimensions of hole during a pinhole camera is big because the size of a mug then the sharpness within the hole of a pinhole camera increases then lighter enters and disturbs the formation of the image.
3. If the dimensions of the image are increased, then the length of the pinhole camera will increase but the image becomes to be less bright.

Additional Information:
The distance between the screen of the pinhole camera and the pinhole is doubled from the point $20cm$ to $40cm$. How will it affect the image of an object key is, when the distance between the pinhole and screen is increased the size of the image formed on the screen increases. However the images are going to be less bright and blurred.

Note: When the image is formed by a pinhole camera could always be projected into a translucent screen for safe observation of the eclipse or a real-time viewing. The movement of the sun over an extended period of your time taken is a common use of pinhole photography to be captured perfectly. Pinhole cameras are sometimes used for surveillance because they're difficult to detect.