JEE Main & Advanced
JEE Main Online Paper (Held On 23 April 2013)
question_answer
If the projections of a line segment of the \[x,y\]and z-axes in 3-dimensional space are 2, 3 and 6 respectively, the length of the line segment is:
JEE Main Online Paper ( Held On 23 April 2013 )
A) 12
B) 7
C) 9
D) 6
Correct Answer:
B
Solution :
Length of the line segment \[=\sqrt{{{(2)}^{2}}+{{(3)}^{2}}+{{(6)}^{2}}}=7\]