Wave OpticsHard
Question
In a Young′s double slit experiment, green light is incident on the two slits. The interference pattern is observed on a screen. Which of the following charges would cause the observed fringes to be more closely spaced ?
Options
A.Reducing the separation between the slits
B.Using blue light instead of green light
C.Used red light instead of green light
D.Moving the light source further away from the slits.
Solution
Fringes to be more closed when fringe width becomes reduced fringe width β = 
As decrease also decreases (λblue < λgreen)
As decrease also decreases (λblue < λgreen)Create a free account to view solution
View Solution FreeMore Wave Optics Questions
In Young′s experiment, monochromatic light through a single slit S is used to illuminate the two slits S1 and S2. ...Wavelength of light used in an optical instrument are λ1 = 4000 and λ2 = 5000 , then ratio of their respective...If size of a disc is very small, then its geometrical shadow will possess one of the following :...An interference is observed due to two coherent sources ′A′ & ′B′ having zero plase difference s...In diffraction radius of half period zone is proportional to :...