Meenal goel Asked a Question
August 25, 2020 10:57 ampts 30 pts
tell me the 20th qsn of usp-6 .please help me in this qsn
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  • Ruby negi thankyou
    see this..m option b is correct...
    • cropped-1737125627.jpg
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  • Ruby negi
    i used simple formula of (a+b) sin theta =n Lamda...
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  • Ruby negi
    for may doubt, do let me know...
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