PHASE CHANGE..........

IIT JEE 2015 Questions › Optics questions › PHASE CHANGE..........

In case of a ray travelling frm MEdium a to medium b

WaT IS THE NECESSARY COndition/relationg between the refractive indices of a and b

SO AS TO BRING ABT A PHASE CHAGE OF Î in the traveling wave.....??????????

#Physics #Optics

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7 Answers

1

ANKIT MAHATO ·2009-03-30 05:54:06

the condition we want can be achieved when total internal reflection takes place (phase change of pie)
so

i > i_c

cosec i_c = Î¼_a/Î¼_b

sin i_c = Î¼_b/Î¼_a

angle of incidence > sin^-1(Î¼_b/Î¼_a)

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21

tapanmast Vora ·2009-03-30 05:59:19

In case of simple reflection, do v hav a fase chage of pie??

i.e. Light fals on water surface, partially it is reflected, partially reflected........

THEN DO V HAVE A PHASE CHANGE OF PIE?

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21

tapanmast Vora ·2009-03-30 06:00:58

or is this true ?? path diff. Î»/2(due to reflection)

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1

ANKIT MAHATO ·2009-03-30 06:02:21

are yaar Lloyds mirror yaad hai na . . usme Î ka phase change aata hai reflection hone ke baad ..

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1

ANKIT MAHATO ·2009-03-30 11:19:59

[307] gud one :)

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Pavithra Ramamoorthy ·2009-03-30 11:21:55

[9][9][9][9][9][9][9][9][9][9]

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21

tapanmast Vora ·2009-03-30 11:22:04

[222] [87]

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