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If the projection of a line segment PQ o...

If the projection of a line segment PQ on the coordinate axes are 3,4,5, then the length of the line segment is

A

`3sqrt2`

B

`7sqrt2`

C

`6sqrt2`

D

`5sqrt2`

Text Solution

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The correct Answer is:
D
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HIMALAYA PUBLICATION-THREE DIMENSIONAL GEOMETRY-QUESTION BANK
  1. The ratio in which the line joining points (2, 4, 5), (3,5,- 4) is div...

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  2. The projection of a line segment on x, y, z axes are respectively sqrt...

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  3. If the projection of a line segment PQ on the coordinate axes are 3,4,...

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  4. If the projection a of a line segment PQ on the coordinate as are 2,3,...

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  5. The projection of the line segment joining P(2,-1,0) and Q(3,-2,1) on ...

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  6. The ratio in which the line joining (3,4,-7) and (4,2,1) is divided by...

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  7. The points (3,4,-3) divides the line joining the points (2,3,-1) and (...

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  8. The area of triangle whose vertices are (1,2,3), (2,5,-1) and (-1,1,2)...

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  9. If alpha, beta, gamma and delta be four angles of a cyclic qardrilater...

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  10. The equation x^(2) + y^(2) + z^(2) = 0 represents

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  11. The equation a x+b y+c=0 represents a plane perpendicular to the

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  12. The equation of the line passing through the points (4,-5,-2) and (-1,...

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  13. Equation of the plane containing the straight line x/2=y/3=z/4 and per...

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  14. Find the equation of the plane through the line of intersection of the...

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  15. The equation of the plane passing through (1,-1,1) and through the lin...

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  16. The equation of the plane through the points (1,-1,0), (0,-2,1) and (2...

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  17. Equation of the line passing through (1, 1,1) and perpendicular to 2x ...

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  18. Equation of the plane through P(2,2,-3) and perpendicular to OP, where...

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  19. Equation of the plane through the points (3,-1,2) and (2,1,3) and para...

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  20. Equation of the plane passing through the points (3,-1,2) and (2,2,-1)...

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