IIT JEE , AIEEE Forum - Physics , Optics

madmax

Dude One more thing tht i just read Online

You can actually do the single slit experiment wherever you are right now! Hold two of your fingers very close together; there should be only the tiniest little gap between them that you can barely see through. Look towards a light source, light a light bulb, through the gap in your fingers. In the gap between your fingers you shold see very faint gray lines that run parallel to your fingers... these are the destructive interference "dark" fringes!

saurabh_reincarnated

see dude anader one is fairly very simple exp...

see this

see ur finger nails closely and carefully in light... what do u see..

u will see light and dark bands near each other very close as stripes..

this is due to interfernce only..

hope u will fnd this interestin..

this i read somewhere in a gud book and u can easily observe it....

it happens only at closely spaced areas of finger nails

Cheers!!!!!!

swashata4iit

RefQ.When white light instead of monochromatic light falls on a slit of YDSE
then one sees:
a no interference
b coloured fringes
c black and white fringes
d white central fringe with coloured fringes on either side

Ans.......________
Hi Buddy m giving u the correct answer...
U r right the correct option is "d"

The explanation is as follows....

The interference patterns due to different componenet colours of white light overlap incoherently. The central bright fringes for all the different colours are at the same position. So the central fringe is white. Since blue colour(neglecting violate) has the minimum wave length, the fringe closest on either side of the central white fringe is blue. After a few fringes, no clear fringe pattern is seen.

Hence the correct option is
d. white central fringe with coloured fringes on either side

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