Optical Instrument | MCQs

Explanation

Zacharias Janssen, along with his father Hans Janssen, is credited with the invention of the first compound microscope in 1590, 

Explanation

A telescope is used by the eye to see distant objects. Similarly:  A necklace is worn around the neck

Explanation

Galileo made his first telescope in 1609

The telescope is an optical instrument used to view distant objects/small object

Barometer Inventor: Evangelista Torricelli

Steam engine Inventor: Thomas Savery

Microscope Inventor : Zacharias Janssen

Explanation

Telescope: It is a device used to see distant objects.

The word telescope was coined in 1611 by the Greek mathematician Giovanni Demisiani 

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ND22-1-2023

Explanation

• The triangular prism is one of the most commonly used dispersive prisms, particularly in spectroscopy and optical instruments.
• It is called a dispersive prism because it separates light into its different colors (spectrum) due to the different refractive indices of the glass for different wavelengths.

Explanation

• Binoculars typically use Porro prisms, which are a type of reflecting prism that uses total internal reflection to redirect light.
• Porro prisms are named after their inventor, Ignazio Porro, and are widely used in binoculars and other optical instruments.

Explanation

Binoculars use a combination of lenses and prisms to magnify and redirect light, relying on total internal reflection to ensure minimal light loss and a bright, clear image.

Explanation

Reflecting prisms work on the principle of total internal reflection, where light is completely reflected back into the prism material rather than passing through the interface.