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RAJASTHAN PMT Rajasthan - PMT Solved Paper-2008

  • question_answer
    To get three images of a single object, one should have two plane mirrors at an angle of

    A) \[60{}^\circ \]                                   

    B) \[90{}^\circ \]

    C) \[120{}^\circ \]                 

    D)        \[30{}^\circ \]

    Correct Answer: B

    Solution :

    \[n=\frac{{{360}^{o}}}{\theta }-1\] \[3=\frac{{{360}^{o}}}{\theta }-1\]                 \[\theta ={{90}^{o}}\]


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