Questão de Física com gabarito

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n1​>$n_2$" class="formula" src="/api/latex-svg?format=svg.latex&equation$=n_3$%3En${}_1$%3En${}_2$">

n3​>$n_2$" class="formula" src="/api/latex-svg?format=svg.latex&equation$=n_1$%3En${}_3$%3En${}_2$">

n2​>$n_3$" class="formula" src="/api/latex-svg?format=svg.latex&equation$=n_1$%3En${}_2$%3En${}_3$">

n1​>$n_3$" class="formula" src="/api/latex-svg?format=svg.latex&equation$=n_2$%3En${}_1$%3En${}_3$">