1
NDA 2019 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
The distance between the parallel planes $$4x - 2y + 4z + 9 = 0$$ and $$8x - 4y + 8z + 21 = 0$$
A
$${1 \over 4}$$
B
$${1 \over 2}$$
C
$${3 \over 2}$$
D
$${7 \over 4}$$
2
NDA 2019 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
What are the direction cosines of Z-axis?
A
<1, 1, 1>
B
<1, 0, 0>
C
<0, 1, 0>
D
<0, 0, 1>
3
NDA Mathematics 14th September 2025
MCQ (Single Correct Answer)
+2.5
-0.833
Change Language
For the following two (02) items:
A plane P is parallel to the line having direction ratios $\langle1, 3, 2\rangle $ and contains the line of intersection of the planes 6x + 4y - 5z = 2 and x - 2y + 3z = 0
Which of the following are the direction ratios of the line of intersection of the given planes?
1
$\langle2, 23, 16\rangle$
2
$\langle2, - 23, - 16\rangle$
3
$\langle2, 3, 2\rangle$
4
$ \langle- 1, 3, - 2\rangle$
4
NDA Mathematics 14th September 2025
MCQ (Single Correct Answer)
+2.5
-0.833
Change Language
For the following two (02) items:
A plane P is parallel to the line having direction ratios $\langle1, 3, 2\rangle $ and contains the line of intersection of the planes 6x + 4y - 5z = 2 and x - 2y + 3z = 0
What is the equation of the plane P?
1
 2x - 20y + 29z + 2 = 0
2
2x + 3y + 2z - 4 = 0
3
2x - 20y + 29z - 2 = 0
4
 x - 3y + 2z + 5 = 0