Question

Calculate the wavelength of light used in an interference experiment from the following data: Fringe width = 0.03cm. Distance between the slits and eyepiece through which the interference pattern is observed is 1m. Distance between the images of the virtual source when a convex lens of focal length 16cm is used at a distance of 80cm from the eyepiece is 0.8cm.

• A. \(0.0006\,\text{\AA}\)
• B. \(0.0006\,\text{cm}\)
• C. \(600\,\text{cm}\)
• D. 6000AA

Hint:

Always convert units carefully and find actual slit separation using magnification.

Answer 1

The Correct Option is D