Advertisements
Advertisements
Question
A monochromatic light of wavelength 500 nm is incident normally on a single slit of width 0.2 mm to produce a diffraction pattern. Find the angular width of the central maximum obtained on the screen.
Estimate the number of fringes obtained in Young's double slit experiment with fringe width 0.5 mm, which can be accommodated within the region of total angular spread of the central maximum due to single slit.
Advertisements
Solution
The angular width of the central maximum obtained on the screen.
`=(2λ)/d`
`=(2×500×10^-9)/(0.2×10^-3)`
`=5×10^-3 m`
The number of fringes obtained in Young's double slit experiment
`"Angular width"/"Fringe width"=(5×10^-3)/(0.5×10^-3)=10`
APPEARS IN
RELATED QUESTIONS
Write two characteristics features distinguish the diffractions pattern from the interference fringes obtained in Young’s double slit experiment.
The slits in a Young's double slit experiment have equal width and the source is placed symmetrically with respect to the slits. The intensity at the central fringe is I0. If one of the slits is closed, the intensity at this point will be ____________ .
If Young's double slit experiment is performed in water, _________________ .
Two transparent slabs having equal thickness but different refractive indices µ1 and µ2are pasted side by side to form a composite slab. This slab is placed just after the double slit in a Young's experiment so that the light from one slit goes through one material and the light from the other slit goes through the other material. What should be the minimum thickness of the slab so that there is a minimum at the point P0 which is equidistant from the slits?
Wavefront is ______.
Draw the intensity distribution as function of phase angle when diffraction of light takes place through coherently illuminated single slit.
Two slits in Young's interference experiment have width in the ratio 1 : 2. The ratio of intensity at the maxima and minima in their interference is ______.
Two balls are projected at an angle θ and (90° − θ) to the horizontal with the same speed. The ratio of their maximum vertical heights is:
In Young's double slit experiment shown in figure S1 and S2 are coherent sources and S is the screen having a hole at a point 1.0 mm away from the central line. White light (400 to 700 nm) is sent through the slits. Which wavelength passing through the hole has strong intensity?
What did Young's double-slit experiment provide strong evidence for?
