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CBSE Class 10 Answered

what is light
Asked by shubhankarmishar7 | 15 May, 2021, 20:58: PM
answered-by-expert Expert Answer
Light is electromagnetic radiation in the wavelength range 400 nm to 700 nm . [ nm stands for nanometer , 10-9 m ].
 
When electromagnetic radiation is in the above mentioned wavelength range , our ey can detect this radiation .
 
We call this electromagnetic radiation in the wavelength range 400 nm to 700 nm as light.
 
Colour of light depends on wavelength as given below in the table
 
 Colour  Wavelength ( nm )
 Violet  400
 Blue  450
 Cyan  500
 Green  550
 Yellow  580
 Orange  600
Red 650 - 700
Answered by Thiyagarajan K | 15 May, 2021, 21:50: PM

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