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when a parallel beam of light is incident on a spherical glass surface,what is the condition for it to get totally internally reflected...? if ur ans is NO CONDITION (which is what i m getting!!) , then can u pls explain the formation of a rainbow...(which is TIR in sphere)?? i m confused...pls help..

when a parallel beam of light is incident on a spherical glass surface,what is the condition for it to get totally internally reflected...?


 


if ur ans is NO CONDITION (which is what i m getting!!) , then can u pls explain the formation of a rainbow...(which is TIR in sphere)??


 


i m confused...pls help..

Grade:12

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