NEET Physics Vectors MCQs Set A

Question. How many minimum number of vectors in different planes can be added to give zero resultant?
(a) 4
(b) 5
(c) 3
(d) 2

Answer: A

Question. Acceleration due to gravity
(a) polar vector
(b) a scalar
(c) a vector
(d) None of these

Answer: A

Question. The resultant of A × 0 will be equal to
(a) zero vector
(b) zero
(c) A
(d) unit vector

Answer: A

Question.  Consider the following statements and select the correct statements from the following.
I. Addition and subtraction of scalars make sense only for quantities with same units
II. Multiplication and division of scalars with different units is possible
III. Addition, subtraction, multiplication and division of scalars with same unit is possible
(a) I, II and III
(b) II and III
(c) I and II
(d) I and III

Answer: A

Question. It is found that | A + B | = | A |. This necessarily implies,
(a) A and B are antiparallel
(b) A and B are perpendicular
(c) B = 0
(d) A.B < 0

Answer: A

Question.  Which of the following statements is/are incorrect?
I. A scalar quantity is the one that is conserved in a process.
II. A scalar quantity is the one that can never take negative values.
III. A scalar quantity has the same value for observers with different orientations of the axes.
(a) I and II
(b) II only
(c) I and III
(d) II and III

Answer: A