A scalar quantity is one that:

1. is conserved in a process.
2. will never accept negative values.
3. must be dimensionless.
4. has the same value for observers with different orientations of axes.

Subtopic:  Scalars & Vectors |
 61%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

The position of a particle in a rectangular co-ordinate system is (3, 2, 5). Then its position vector will be:

1. 5i^+6j^+2k^

2. 3i^+2j^+5k^

3. 5i^+3j^+2k^

4. None of these

Subtopic:  Scalars & Vectors |
 92%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

A force of 5N acts on a particle along a direction making an angle of 60° with vertical. Its vertical component will be:

1. 10 N

2. 3 N

3. 4 N

4. 2.5 N

Subtopic:  Resolution of Vectors |
 86%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

A is a vector with magnitude A, then the unit vector A^ in the direction of A is

1. AA

2. A.A

3. A×A

4. A/A

Subtopic:  Resolution of Vectors |
 80%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

If A=2i^+4j^-5k^, then the direction cosines of the vector are:

(direction cosines (or directional cosines) of a vector are the cosines of the angles between the vector and the three +ve coordinate axes.)

1. 245, 445 and -545

2. 145, 245 and 345

3. 445, 0 and 445

4. 345, 245 and 545

Subtopic:  Resolution of Vectors |
 88%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

The vector that must be added to the vector i^-3j^+2k^ and 3i^+6j^-7k^ so that the resultant vector is a unit vecotr along the y-axis is

1. 4i^+2j^+5k^

2. -4i^-2j^+5k^

3. 3i^+4j^+5k^

4. Null vector

Subtopic:  Resultant of Vectors |
 78%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Surface area is:

1. Scalar

2. Vector

3. Neither scalar nor vector

4. Both scalar and vector

Subtopic:  Vector Product |
 57%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

A force \(\mathrm{F}\) applied at a \(30^\circ\) angle to the \(\mathrm{x }\)-axis has the following X and Y components:

1. F2, F

2. F2, 32F

3. 32F, 12F

4. F, F2

Subtopic:  Resolution of Vectors |
 79%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Angular momentum is

1. A scalar

2. A polar vector

3. An axial-vector

4. None of these

Subtopic:  Vector Product |
 75%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links

If P=Q , then which of the following is NOT correct?

1. P^=Q^

2. P=Q

3. PQ^=QP^

4. P+Q=P^+Q^

Subtopic:  Resultant of Vectors |
 71%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh