1anytime jb............writin JEE 2moro???
when a white light is incident on a convex lens d colur of light which is less deviated from optical axis is ive got it as red but d ans is violet can nebody give d perfect xplanation for dat
-
UP 0 DOWN 0 0 25
25 Answers
1when a parallel white light falls on a convex lens d colour meeting d axis close to d optical axis will b?
1tanx bhai & im a dropper & i had a confusion tanx for clarifying
1close to d optical centre means....it is more deviated.....
just imagine.....u r parallel to d axis....and u want to touch it b4 oders do....
so u deviate more in order to be closer to d optical centre
1ok w8......i think u r in 11th....
listen.....on d electromagnetic spectrum.....wew know that
violet has lesser wavelength than red....
now...
focal length is directly prop to wavength (u will learn d derivation in 12th)
so f is less for violet thts all......
1i dont understand plz can ne1 give a fig or tell me in words plz
13just remember violet suffers greatest deviation...
order..VIBGYOR...
1first found in visible spectrum.................
cool!!!! 100% not reliable ans
1when a parallel white light falls on a convex lens d colour meeting d axis close to d optical axis will b?
1yea, akand is right. u can also take the lrns as a collection of prisms and get to the answer.
1also can we use rayleighs scattering law.. dat too satisfies d condition...
pls forgive me if iam wron n if dis s a stupid question..
1yup according 2 cauchys law
μ=A+B/λ
so f is prop to λ
so since red has more λ so it has more f............
so violet has lesser f ........so its deviated more........
simple
1@akand.....then y do u find d rainbow in d order vibgyor????