NEET 2018 Physics question
In Young's double slit experiment the separation between the slits is 2 mm, the wavelength of the light used is 5896 Å and distance between the screen and slits is 100 cm. It is found that the angular width of the fringes is . To increase the fringe angular width to (with same and ) the separation between the slits needs to be changed to
Answer: (2)
Solution
Angular fringe width , so for fixed . gives , so $
See the full step-by-step solution
Create a free account to read the complete working, and practise questions like this in a timed test.
Create a free account