Vectors and Equilibrium — Physics MCQs (Class 11)
Free chapter-wise Physics MCQs with answers for MDCAT, FSc and entry tests.
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#9 The sum of two vectors $\vec{A}$ and $\vec{B}$ is found by which method?
A) Head-to-tail rule
B) Parallelogram rule
C) Both A and B
D) Cross product
#10 The dot product of two perpendicular vectors is:
A) Maximum
B) Zero
C) Negative
D) Minimum
#11 What is the dot product of two parallel vectors?
A) 0
B) $AB\cos\theta$
C) $AB$
D) $AB\sin\theta$
#12 The cross product of two parallel vectors is:
A) A null vector
B) Maximum
C) A scalar
D) Negative
#13 The direction of the cross product of $\vec{A}$ and $\vec{B}$ is given by:
A) Left-hand rule
B) Right-hand rule
C) Fleming's rule
D) Newton's rule
#14 If $\vec{A} \cdot \vec{B} = 0$, then the angle between vectors $\vec{A}$ and $\vec{B}$ is:
A) $0^\circ$
B) $45^\circ$
C) $90^\circ$
D) $180^\circ$
#15 The cross product of two vectors $\vec{A}$ and $\vec{B}$ is represented as:
A) $\vec{A} \cdot \vec{B}$
B) $\vec{A} \times \vec{B}$
C) $\vec{A} + \vec{B}$
D) $\vec{A} - \vec{B}$
#16 Torque is a measure of the turning effect of a force and is given by:
A) $\tau = \vec{r} \cdot \vec{F}$
B) $\tau = \vec{r} \times \vec{F}$
C) $\tau = F/r$
D) $\tau = F \times r$
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