Vectors And Equilibrium MCQs

Option A: Rotational equilibrium

Option B: Translational equilibrium

Option C: Static equilibrium

Option D: Both A and C are corret answer

Correct Answer: Static equilibrium ✔

Option A: 1st condition of equilibrium

Option B: 2nd condition of equilibrium

Option C: Both Ist and 2nd condition of equilibrium

Option D: Impossible

Correct Answer: 2nd condition of equilibrium ✔

Option A: Always at rest

Option B: Always in uniform motion

Option C: May be at rest or in uniform motion

Option D: May be at rest or in motion

Correct Answer: May be at rest or in uniform motion ✔

Option A: Acceleration

Option B: Linear acceleration

Option C: Angular acceleration

Option D: Direction of motion of the body

Correct Answer: Angular acceleration ✔

Option A: N.m

Option B: joule

Option C: Both a and b are correct

Option D: Neither a nor b is correct

Correct Answer: N.m ✔

Option A: [ML2T-2]

Option B: [MLT-2]

Option C: [ML2T]

Option D: [ML-2T-2]

Correct Answer: [ML2T-2] ✔

Option A: Turning effect of force

Option B: Cross product of position vector and force

Option C: Product of force and moment arm

Option D: All A, B and C are correct

Correct Answer: All A, B and C are correct ✔

Option A: 30°

Option B: 45°

Option C: 60°

Option D: 180°

Correct Answer: 45° ✔

Option A: Their dot product

Option B: Their cross product

Option C: Head to tail rule

Option D: Right-hand rule

Correct Answer: Their dot product ✔

Option A: ??3 i^ + ??3 j^ + ??3 k^

Option B: 1/??3 i^ + 1/??3 j^ +1/ ??3 k^

Option C: ??3 / 3 i^ + ??3 / 3 j^ + ??3 / 3 k^

Option D: Both B and C are correct

Correct Answer: Both B and C are correct ✔

Option A: Zero magnitude

Option B: No specified direction

Option C: Both A and B are correct

Option D: Both A and B are not correct

Correct Answer: Both A and B are correct ✔

Option A: West

Option B: North

Option C: Down

Option D: Up

Correct Answer: Down ✔

Option A: Head to tail rule

Option B: Right-hand rule

Option C: Left-hand rule

Option D: Triangular rule

Correct Answer: Right-hand rule ✔

Option A: 1

Option B: i^

Option C: j^

Option D: k^

Correct Answer: 1 ✔

Option A: A.B = A^ B^

Option B: |A| = |B|

Option C: |A^| = |B^|

Option D: AB^ = BA^

Correct Answer: A.B = A^ B^ ✔

Option A: B is anti-parallel to A

Option B: B is a negative vector of A

Option C: B has a negative magnitude

Option D: B is perpendicular to A

Correct Answer: B is a negative vector of A ✔

Option A: A.B/A

Option B: A.B/B

Option C: A.cosθ

Option D: Both a and b are correct

Correct Answer: A.B/A ✔

Option A: 1st

Option B: 2nd

Option C: Both 1st and 3rd

Option D: 4th

Correct Answer: 1st ✔

Option A: 30°

Option B: 60°

Option C: 90°

Option D: 120°

Correct Answer: 60° ✔

Option A: Can produce torque

Option B: Cannot produce torque

Option C: Some time can produce torque some time cannot

Option D: Has no relation with torque

Correct Answer: Cannot produce torque ✔

Option A: A. B = Ax Bx + Ay By + Az Bz

Option B: A. B = Ax By + Ay Bz + Az By

Option C: A. B = Ay Bz + Az By + Az Bx

Option D: A. B = Ax Bz + Ay By + Az Bx

Correct Answer: A. A. B = Ax Bx + Ay By + Az Bz ✔

Option A: 0

Option B: 1

Option C: -1

Option D: i^

Correct Answer: 1 ✔

Option A: First

Option B: Second

Option C: Third

Option D: Both 1st and 3rd

Correct Answer: Both 1st and 3rd ✔

Option A: They are parallel vectors

Option B: They are anti parallel vectors

Option C: They are a perpendicular vector

Option D: They are rotated through 270°

Correct Answer: They are rotated through 270° ✔

Option A: 2i^ – 2j^ + k^

Option B: (2i^ – 2j^ +k^)/9

Option C: (2i^ – 2j^ +k^)/3

Option D: (2i^ – 2j^ +k^)/5

Correct Answer: (2i^ – 2j^ +k^)/3 ✔

Option A: Zero

Option B: One

Option C: i^

Option D: k^

Correct Answer: k^ ✔

Option A: Accelerating force increases on the wheel

Option B: Two forces act on the wheel

Option C: Two hands provide a firm grip

Option D: The couple acts on the wheel

Correct Answer: The couple acts on the wheel ✔

Option A: Torque and energy

Option B: Momentum and impulse

Option C: Energy and work

Option D: Mass and moment of inertia

Correct Answer: Mass and moment of inertia ✔

Option A: Concurrent

Option B: Non-concurrent

Option C: Parallel

Option D: Non-parallel

Correct Answer: Concurrent ✔

Option A: 30°

Option B: 60°

Option C: 90°

Option D: 120°

Correct Answer: 120° ✔

Option A: Has direction 45° with an x-axis

Option B: Has magnitude 2

Option C: Has magnitude 2 and direction °=45° with a y-axis

Option D: Has magnitude -2

Correct Answer: Has magnitude -2 ✔

Option A: 1

Option B: 2

Option C: 3

Option D: Infinite

Correct Answer: Infinite ✔

Option A: Vector

Option B: Position Vector

Option C: Vector in the direction at angle θ with an x-axis

Option D: The unit vector in the direction at angle θ with an x-axis

Correct Answer: The unit vector in the direction at angle θ with an x-axis ✔

Option A: 1

Option B: 2

Option C: 3

Option D: 4

Correct Answer: 3 ✔

Option A: Polar coordinate system

Option B: Cartesian coordinate system

Option C: Cylindrical coordinate system

Option D: Spherical coordinate system

Correct Answer: Cartesian coordinate system ✔

Option A: X-axis

Option B: Normal on a surface

Option C: Y-axis

Option D: Z-axis

Correct Answer: Normal on a surface ✔

Option A: Dimensionless

Option B: Dimensional scalar

Option C: Negative

Option D: All A, B and C are correct

Correct Answer: All A, B and C are correct ✔

Option A: One angle

Option B: Two angle

Option C: Three angle

Option D: No angle

Correct Answer: Three angle ✔

Option A: Commutative law

Option B: Distributive law

Option C: Associative law

Option D: All given laws in A, B and C

Correct Answer: All given laws in A, B and C ✔