A) 4
B) 5
C) \[\sqrt{26}\]
D) \[\sqrt{34}\]
Correct Answer: D
Solution :
[d] Let \[P(\alpha ,\beta ,\gamma )\]be any point in a space. Then perpendicular distance of \[P(\alpha ,\beta ,\gamma )\] from y-axis \[d=\sqrt{{{\alpha }^{2}}+{{\gamma }^{2}}}\] So, the perpendicular distance of \[P\left( 3,4,5 \right)\]from y-axis, \[d=\sqrt{{{3}^{2}}+{{(5)}^{2}}}=\sqrt{9+25}=\sqrt{34}\] Hence option [d] is correct.
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