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     EduGorilla 
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    If light travels distance ‘x’ in ‘t1‘ seconds in air and distance ’10x’  in ‘t2 seconds in a medium, then what will be the critical angle of the medium?

    Options :-

    1. tan–1
    2. sin–1
    3. sin–1
    4. tan–1
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Reply To: If light travels distance ‘x’ in ‘t1′ seconds in air and distance ’10x’  in ‘t2’ seco….
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