Please wait...
1800-212-7858 (Toll Free)
9:00am - 8:00pm IST all days
For Business Enquiry


Thanks, You will receive a call shortly.
Customer Support

You are very important to us

For any content/service related issues please contact on this toll free number


Mon to Sat - 11 AM to 8 PM

(a) Why does white light undergo dispersion?

(b) What is the range of wavelength of visible light?

Asked by Topperlearning User 4th June 2014, 1:23 PM
Answered by Expert

(a) White light is composed to 7 spectral colours, which are of different wavelengths. They travel with different speeds when passed through a medium like glass. As a result of difference in speeds of constituent colours of light while passing through a medium, their refractive indices are also different, and hence the white light splits into the respective spectral colours. This splitting of colours of white light is known as dispersion of white light.

(b) Range is: 4 x 10-7 m to 8 x 10-7 m.

Answered by Expert 4th June 2014, 3:23 PM
Rate this answer
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10

You have rated this answer /10

Your answer has been posted successfully!

Chat with us on WhatsApp