Optical Instruments

I use a magnifying glass to identity and evaluate gemstones. Who am I ?

What is the use of in compound microscope ?

• used to observe distanced objects

• used to form magnified images of distance objects

• used to view very small objects

• to read someone's mind

What are the applications of small lenses in Optical Instruments Technology ?

• Closed Circuit Television ( CCTV )

• Lenses in smartphone cameras

• Contact lenses for clearer vision

State one similarity between a compound microscope and an astronomical telescope

• In normal adjustment, the final image is at near point

• Consists of two convex lenses

• The focal length of objective lens is shorter

• Image formed by objective lens is magnified

What is the name of this optical instrument?

• Telescope

• Binocular

• Microscope

• Magnifying glass

I am an ophthalmologist. What I use to examine eyes?

Which optical instrument also known as simple microscope?

• Magnifying glass

• Compound microscope

• Telescope

• Closed circuit television

When did Galileo Galilei invented the telescope to observe the four moon?

• 1609

• 1664

• 1671

• 1613

• 1625

The diagram above shows formation of image by _______

I use telescope to study celestial objects. Who am I?