Question

Which instrument is used to see distant objects?
1. Aluminium
2. periscope
3. Telescope
4. Microscope

Answer 1

Correct Answer - Option 3 : Telescope

CONCEPT: 

• Telescope: It is a device used to see distant objects. 
  • The simple telescope consists of two lenses, an objective lens, and an eyepiece. 
  • The objective lens captures the image from a distant object and focuses it on the focus of the second lens eyepiece.
  • The eyepiece forms the magnified image of the object for our eyes.

EXPLANATION:

• So, the device used to see the distant object is a telescope. 
• So, the correct answer is a telescope.

• Nowadays different high-resolution telescopes are used where the focal length of the lens can be changed. 
• A microscope is a device used to get a clear magnified view of microorganisms like bacteria and amoeba. .