Physics
Vectors and Equilibrium
Page 14 of 25
#105 If the dot product of two vectors is negative, the angle between them is:
A) Acute
B) Obtuse
C) Right
D) $0^\circ$
Answer: B
#106 The cross product of $\hat{k} \times \hat{i}$ is:
A) $\hat{j}$
B) $-\hat{j}$
C) 0
D) 1
Answer: A
#107 The cross product of $\hat{i} \times \hat{k}$ is:
A) $\hat{j}$
B) $-\hat{j}$
C) 0
D) 1
Answer: B
#108 The maximum number of components of a vector is:
A) 1
B) 2
C) 3
D) Unlimited
Answer: D
#109 The resultant of two vectors is minimum when the angle between them is:
A) $0^\circ$
B) $90^\circ$
C) $180^\circ$
D) $45^\circ$
Answer: C
#110 Which of the following is a scalar field?
A) Temperature distribution in a room
B) Wind speed
C) Gravitational force
D) Electric field
Answer: A
#111 Which of the following is a vector field?
A) Mass
B) Density
C) Gravitational field
D) Time
Answer: C
Page 14 of 25
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