Free Vectors and Equilibrium MCQs with Answers
431 Vectors and Equilibrium MCQs from Physics, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Vectors have magnitude and direction, unlike scalars, and are combined by head-to-tail or parallelogram methods. Work covers rectangular components, equilibrium when the resultant force is zero, the scalar product for work and projections, and the vector product for torque and cross-product direction using the right-hand rule.
Last updated
Read the Vectors and Equilibrium notesFree MDCAT chapter notes with key terms431 questions · page 19 of 22
- A. Unit vectors
- B. Null vector
- C. Base vectors
- D. None of the above
Explanation: A null vector (also known as a zero vector) is a vector whose components are all zero.
Correct answer: Null vector- A. A null vector
- B. Square of the vector
- C. Unit vector
- D. Magnitude of A
Explanation: B is the correct answer. The scalar product of a vector with itself is the square of its magnitude.
Correct answer: Square of the vector- A. Option A
- B. Option B
- C. Option C
- D. Option D
Explanation: This question can be solved by the following method:
Correct answer: Option B- A. Direction
- B. Weight
- C. Quantity
- D. None of the above
Explanation: The prominent differences between scalars and vectors are as follows:
Correct answer: Direction- A. Ratio
- B. Scalar
- C. Vector
- D. Pure number
Explanation: Explanation: What Is Electric Field Intensity? The space around an electric charge in which its influence can be felt is known as the…
Correct answer: Vector- A. Tangential to the orbit
- B. Directed toward the centre of the orbit
- C. Directed in the same direction as the force vector
- D. b and c
Explanation: The acceleration is directed towards the centre. This is a radial acceleration and is called the centripetal acceleration.
Correct answer: b and c- A. Acceleration, Force, Mass
- B. Mass, Displacement, Velocity
- C. Acceleration, Electric flux, Force
- D. Velocity, Electric field, Momentum
Explanation: Explanation for this question is as follows: Vector Quantity Definition The physical quantities for which both magnitude and direction are…
Correct answer: Velocity, Electric field, Momentum- A. Time and mass
- B. Temperature and density
- C. Force and displacement
- D. Length and volume
Explanation: Explanation for this question is as follows:
Correct answer: Force and displacement- A. Only magnitudes
- B. Only directions
- C. Both magnitude and direction
- D. None of these
Explanation: The Explanation for this question is as follows: Scalar Quantity Definition The physical quantities which have only magnitude are known as…
Correct answer: Only magnitudes- A. Speed
- B. Average speed
- C. Average velocity
- D. None of these
Explanation: Velocity is a vector quantity, and average velocity can be defined as the displacement divided by the time. What is Average Velocity?
Correct answer: Average velocity- A. Find out the algebraic sum of all the individual x-components
- B. Find out the algebraic sum of all the individual y-components
- C. Resolve each given vector into its rectangular components (x and y components)
- D. Find out the magnitude of the sum of all the vectors
Explanation: Explanation: To find the sum of vectors and , we first add the x-coordinates of the two given vectors in component form to find the…
Correct answer: Resolve each given vector into its rectangular components (x and y components)- A. Is reversed
- B. Remains unchanged
- C. Make an angle of 60°
- D. May be changed or not
Explanation: Multiplying a vector by negative one reverses the direction but doesn't change the magnitude.
Correct answer: Is reversed- A. Normal vector
- B. Parallel vector
- C. Free vector
- D. Unit vector
Explanation: The Explanation for this question is as follows: A vector that has a magnitude of 1 is a unit vector.
Correct answer: Unit vector- A. Same as
- B. Perpendicular to
- C. Opposite to
- D. Inclined to
Explanation: The negative vector points opposite to the direction of original vector.
Correct answer: Opposite to- A. 0°
- B. 90°
- C. 120°
- D. 180°
Explanation: The Explanation for this is as follows: application of simple formula. A.B = 0 when angle is 90 because cos90=0
Correct answer: 90°- A. The position of vectors is unimportant
- B. The order of vectors is not to be altered
- C. The direction of resultant is unknown
- D. The position of vectors is important
Explanation: Vector Addition Using Graphical Method The graphical method to add vectors is the head-to-tail method.
Correct answer: The order of vectors is not to be altered- A. More
- B. 1
- C. 0
- D. Any value
Explanation: The Explanation for this question is as follows:
Correct answer: 0- A. b,c,d
- B. a,b,c
- C. a,c,d
- D. a,b,d
Explanation: The Explanation for this question is as follows: The magnitude of the vector product of two vectors A and B may be less than or equal to…
Correct answer: b,c,d- A. In the same plane
- B. Adjacent plane
- C. Along perpendicular to that plane
- D. Parallel to the plane
Explanation: The Explanation for this question is as follows: Point index finger in the x-plane, middle finger in the y-plane, your thumb will point in…
Correct answer: Along perpendicular to that plane- A. 14N
- B. 2N
- C. 10N
- D. 12N
Explanation: The Explanation for this question is as follows:
Correct answer: 10N