Vectors NEET Questions. We covered all the Vectors NEET Questions in this post for free so that you can practice well for the exam.
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MCQ on Vectors for NEET Students
The angle made by 3i+23j with Z-axis
1.90⁰
2.45°
3.0°
4.60°
Option 1 – 90⁰
The magnitude of the cross product of two vectors is equal to the magnitude of the dot product of the same two vectors. Then the angle between them is
1.0°
2. 45°
3.60°
4.90°
Option 2 – 45°
The vector parallel to A-8i+15j and having a magnitude of 51 units are
1. 32i+48j
2. 32i+24j
3. 24i+45j
4. 16i+30j
Option 3 – 24i+45j
The vector parallel to 2i+3j-8k is
1. 4i+3j-16k
2. 6i+9j-8k
3. 8i+8j-24k
4. 6i+9j-24k
Option 4 – 6i+9j-24k
If A=4i-j, B=2i+j then the unit vector perpendicular to A, B is
1. i
2. j
3. k
4. i x k
Option 3 – k
The vectors A and B are along X, and Y-axes respectively. The vector AxB is along
1. X-axis
2. Y-axis
3. Z-axis
4. X or Y-axis
Option 3 – Z-axis
A = -2i+3j-4k, B=3i+4j+5k. Then AXB =
1. 5i-j+k
2. 6i-12j-20k
3. -i+7j-9k
4. 31i-2j-17k
Option 4 – 31i-2j-17k
A force F = 10i+4j-2k acts on a body from a point at a distance of S = 21-4j-2k. The torque acting on the body is
1. 12i+16j+4k
2. 16i-16j+48k
3. 12i+16j-4k
4. 12i-16j+4k
Option 2 – 16i-16j+48k
The vector having magnitude 10 units and opposite to 6i-8j is
1.6i-8j
2.-6i+8j
3.-8i+6j
4.-8i-6j
Option 2 – -6i+8j
If the sum of the vectors of two forces is perpendicular to the difference of the vectors, that forces are
1. equal to one another
2. equal in magnitude
3. magnitude is not equal
4. not assumable
Option 4 – not assumable
A body has linear displacement 3i+4j+2k and linear momentum 2i-3j+2k. Then its angular momentum is
1. 5i+j+4k
2. i-7j+4k
3. 14i-2j-17k
4. 6i-12j+4k
Option 3 – 14i-2j-17k
The vector perpendicular to F=4i-3j.
1.4i+3j
2.61
3.7k
4.3i-4j
Option 3 – 7k
The work done by two forces 2i+2j+5k, 3i-5j-4k on a body to displace it by a distance of 18i+17j-7k is
1.63 units
2.38 units
3.32 units
4. 28 units
Option 3 – 32 units
The work done by a force is W=F.S but if W=0
1. F and S are in the same direction
2. F and S are perpendicular to each other
3. F and S are perpendicular to each other in opposite directions
4. The angle between F and S is not 90°
Option 2 – F and S are perpendicular to each other
Find the area of the triangle having adjacent sides A-3i-4j, B=5i-7j
1. 19.5
2. 0.5
3. 43.5
4. 84.5
Option 2 – 0.5
Three forces a(i-j+k), (2i-3j+4k), and (8i-7j+6k) act on a body and are kept in equilibrium. Then the value of ‘a’ is
1.-8
2.-10
3.12
4.7
Option 2 – -10
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