Optical instruments

What is the name of the device in the picture?

• Telescope

• Microscope

• Microchrome

• Multiscope

This device is used to ___________

• show magnified images of far objects

• show magnified images of near and small objects

• move objects from one place to another

• take pictures of objects

This device uses __________

• two convex lenses

• two concave lenses

• One convex lens and one concave lens

• two convex mirrors

What type of telescope is shown?

• Reflecting telescope

• Refracting telescope

• Primary telescope

• Photo telescope

What type of telescopes is shown in the picture?

• Reflecting telescope

• Refracting telescope

• Primary telescope

• Picture telescope

The device in the picture is used to ________

• see clear images of far objects

• see magnified images of small, near objects

• take pictures

• move objects from their places

In order to see brighter images in a telescope ____________

• more light should be gathered

• less light should be gathered

• a smaller lens should be used

• a lens with short focal length should be used

What kind of lenses is used in a camera?

• Convex lens

• Concave lens

• Normal glass