Question

diameter of newtons bright ring in

reflected light is​

Answer 1

Answer:

In Newton's ring experiment the diameter of n th and (n+8) bright rings are 4.2mm and 7mm respectively. Radius of curvature of lower surface of lens is 2m. Determine the wavelength of light used.

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Answer 2

Newton's Ring- 4.2- 7mm

Explanation:

• In Newton's ring experiment the diameter of n th and (n+8) bright rings are respectively 4.2mm and 7mm and radius of curvature of lower surface of lens is 2m.
• Concentric rings are known as Newton's Rings, when the light reflected upwards is examined through microscope M that is focused on the glass plate, a pattern of dark and bright concentric rings can be seen from the point of contact O.
• The rings of Newton's are as a result of interference that is between the light waves which are reflected from the top and bottom surfaces of the air film formed between the lens and sheets of glass.