Question

1. light rays that enter the hole of a pinhole camera form ______ on the back wall of the camera. (1 point)

○ a right - side - up real image
○ a right - side - up virtual image
○ an upside - down virtual image
○ an upside - down real image

Explanation:

A pinhole camera works based on the rectilinear propagation of light. Light rays from an object pass through the pinhole. The top of the object sends light rays that go through the pinhole and hit the lower part of the back - wall, and the bottom of the object sends light rays that go through the pinhole and hit the upper part of the back - wall. This results in an inverted (upside - down) image. Also, a real image is formed because the light rays actually converge on the back - wall of the camera (can be projected on a screen). A virtual image is formed when light rays appear to diverge from a point (not the case here as light rays actually pass through the pinhole and converge on the back - wall).

Answer:

an upside - down real image