An optical instrument that uses lenses to focus light, and film to record an image of an object.

An optical instrument that uses lenses to focus light, and film to record an image of an object.

• A. Telescope
• B. Binoculars
• C. Camera Obscura
• D. Camera

Answer: (D)

A device that uses lenses to focus light from a scene onto film inside the device is a camera. The lens focuses the light to form an image, and the film records that image chemically, preserving a photograph of what was in front of it. The other options are designed for viewing rather than recording: a telescope is for observing distant objects, a binocular is also for viewing, and a camera obscura projects an image onto a surface without recording it on film. Since the description specifies recording the image on film, the camera is the best fit.

A device that uses lenses to focus light from a scene onto film inside the device is a camera. The lens focuses the light to form an image, and the film records that image chemically, preserving a photograph of what was in front of it. The other options are designed for viewing rather than recording: a telescope is for observing distant objects, a binocular is also for viewing, and a camera obscura projects an image onto a surface without recording it on film. Since the description specifies recording the image on film, the camera is the best fit.