NEET Physics is the very imporatant paper in the Medical Entrance EXAM. So these NEET Physics MCQs with Answers for all Concepts as per the new syllabus. Practice daily with these NEET Physics objective questions on air pollution . NEET Physics Addition and Subtraction of Vectors Multiple Choice Questions
MCQs on Addition and Subtraction of Vectors :
1. At what angle should the two force vectors 5N and 12 N be added to get a resultant vector of 13 N?
(A) 0°
(B) 30°
(C) 90°
(D) 180°
Answer
Answer: (C) 90°
2. If the sum of two unit vectors is 1, then what is the difference between them?
(A) (frac { 1 }{ sqrt { 2 } } )
(B) √2
(C) √3
(D) √4
Answer
Answer: (C) √3
3. What is the net force on the particle if it is simultaneously acted upon by two forces 4 N and 3 N?
(A) 1 N
(B) 7 N
(C) 21 N
(D) Between 7 N and 1 N
Answer
Answer: (D) Between 7 N and 1 N
4. If the magnitude of the resultant force of two forces is lesser than the magnitude of the larger force, then
(A) The two forces are perpendicular to each other
(B) They two forces in opposite directions
(C) The forces are different in magnitude and direction
(D) The forces possess small magnitude
Answer
Answer: (B) The two forces are in opposite directions
5. Two forces (overrightarrow { { F }_{ 1 } } ) and (overrightarrow { { F }_{ 2 } } ) that are perpendicular to each other act on a point mass. The resultant force in the point mass is given by
(A) F1=F2
(B) F1−F2
(C) ({ F }_{ 1 }^{ 2 }+{ F }_{ 2 }^{ 2 })
(D) (sqrt { { F }_{ 1 }^{ 2 }+{ F }_{ 2 }^{ 2 } } )
Answer
Answer: (sqrt { { F }_{ 1 }^{ 2 }+{ F }_{ 2 }^{ 2 } } )
6. If (left| overrightarrow { A } -overrightarrow { B } right| =left| overrightarrow { A } right| =left| overrightarrow { B } right| ), then what is the angle between (overrightarrow { A } ) and (overrightarrow { b } ) ??
(A) 0°
(B) 30°
(C) 60°
(D) 90°
Answer
Answer: (C) 60°
7. Which of the following is true for the given diagram?
Answer
Answer: (B) (overrightarrow { C } +overrightarrow { A } =overrightarrow { B } )
8. If three vectors A, B and C have magnitudes 5, 12 and 13 and (overrightarrow { A } +overrightarrow { B } =overrightarrow { C } ), then what is the angle between B and C?
Answer
Answer: (A) (cos ^{ -1 }{ frac { 12 }{ 13 } } )
9. Two forces F1 and F2 act on a body. One of the forces is double of the other force. The resultant of these forces is equal to the larger force. What is the angle between the forces?
Answer
Answer: (D) (cos ^{ -1 }{ -frac { 1 }{ 4 } } )
10. A person travels 10 km North and 20 km East. What will be the displacement from the initial point?
(A) 20 km
(B) 22.36 km
(C) 30 km
(D) 32.36 km
Answer
Answer: (B) 22.36 km