Ask Questions, Get Answers

Want to ask us a question? Click here
Browse Questions
Home  >>  EAMCET  >>  Physics
0 votes

Light of wavelength $ \lambda$ from a point source falls on a small circular obstacle of diameter 'd' . dark and bright circular rings around the central bright spot are formed on a screen beyound the obstacle. The distance between the screen and obstacle is D. Then, the condition for the formation of rings is

$\begin {array} {1 1} (1)\;\sqrt{ \lambda} \approx \large\frac{d}{4D} & \quad (2)\;\lambda \approx \large\frac{d^2}{4D} \\ (3)\;d \approx \large\frac{\lambda^2}{D} & \quad (4)\;\lambda \approx \large\frac{D}{4} \end {array}$

Can you answer this question?

1 Answer

0 votes
(2) $ \lambda \approx \large\frac{d^2}{4D}$
answered Nov 7, 2013 by pady_1

Related questions

Ask Question
student study plans
JEE MAIN, CBSE, NEET Mobile and Tablet App
The ultimate mobile app to help you crack your examinations
Get the Android App