Which is not an optical instrument?
Out of all the options, Television is not an optical instrument.
In short, Your Answer would be Option D
Hope this helps!
Answer:
Option (D), television
Explanation:
The optical instrument is an instrument whose working is explained by the phenomenon of reflection or refraction.
An optical instrument consists of mirrors, lenses or both.
Camera, microscope and telescope all are based on the phenomenon of reflection, refraction or both. They consists of lenses or mirrors.
Television is the device in which an electron gun is used. An electric and magnetic field is also used which gives the straight line path to the electron beam.