NCERT Class 11 Physics MCQ Chapter 3 Motion in a Plane Solutions, AHSEC Class 11 Physics Multiple Choice Question Answer to each chapter is provided in the list so that you can easily browse throughout different chapters NCERT Class 11 Physics MCQ Chapter 3 Motion in a Plane Question Answer and select needs one.
Class 11 Physics MCQ Chapter 3 Motion in a Plane
Also, you can read the SCERT book online in these sections NCERT Class 11 Physics Multiple Choice Solutions by Expert Teachers as per SCERT (CBSE) Book guidelines. AHSEC Class 11 Physics MCQ Solutions. These solutions are part of SCERT All Subject Solutions. Here we have given HS 1st Year Physics Objective Type Question Answer for All Subjects, You can practice these here.
Motion in a Plane
Chapter: 3
| PART – Ⅰ |
MULTIPLE CHOICE QUESTION ANSWER
1. If the length and breadth of a rectangle are 2 m and 3 m respectively, what is its perimeter?
(i) 5 m.
(ii) 10 m.
(iii) 12 m.
(iv) 15 m.
Ans: (ii) 10 m.
2. The direction of the angular velocity vector is along:
(i) The tangent to the circular path.
(ii) The outward radius.
(iii) The inward radius.
(iv) The axis of rotation.
Ans: (iv) The axis of rotation.
3. Which of the following quantities is a vector?
(i) Mass.
(ii) Volume.
(iii) Displacement.
(iv) Temperature.
Ans: (iii) Displacement.
4. The scalar product of two vectors A= 3i -4j +5 k and B = -2i +j -3k is:
(i) 25
(ii) 35
(iii) -35
(iv) -25
Ans: (iv) -25
5. The magnitude of a vector is always a:
(i) Vector.
(ii) Scalar.
(iii) Can be both.
(iv) Dimensionless quantity.
Ans: (ii) Scalar.
6. The component of a vector is;
(i) Always less than its magnitude.
(ii) Always greater than its magnitude.
(iii) Always equal to its magnitude.
(iv) None of the above.
Ans: (i) Always less than its magnitude.
7. Three vectors a, b, and c are in equilibrium if:
(i) a + b = c.
(ii) a + b + c = 0.
(iii) a – b + c = 0.
(iv) a = b = c.
Ans: (ii) a + b + c = 0.
8. If R is the maximum horizontal range of a particle, then the angle of projection is;
(i) 90°
(ii) 60°
(iii) 0°
(iv) 45°
Ans: (iv) 45°
9. Three girls are skating on a circular ice ground of radius 200 m from a point P to a point Q diametrically opposite. What is the magnitude of their displacement?
(i) 100 m
(ii) 200 m
(iii) 400 m
(iv) 600 m
Ans: (iii) 400 m
10. A bomb is released by a horizontal flying aeroplane. The trajectory of the bomb is;
(i) A parabola.
(ii) A straight line.
(iii) A circle.
(iv) A hyperbola.
Ans: (i) A parabola.
11. If a motorist turns left by 60° every 500 m, what shape does the path form?
(i) Circle.
(ii) Straight.
(iii) Hexagon.
(iv) Square.
Ans: (iii) Hexagon.
12. A stone tied to a string 80 cm long makes 14 revolutions in 25 seconds. What is its angular velocity?
(i) 2.8 rad/s.
(ii) 3.52 rad/s.
(iii) 4.0 rad/s.
(iv) 5.0 rad/s.
Ans: (ii) 3.52 rad/s.
13. Two trains each of length 100 m are moving parallel towards each other at speeds 72 km/h and 36 km/h respectively. In how much time will they cross each other?
(i) 4.5 s
(ii) 6.67 s
(iii) 3.5 s
(iv) 7.25 s
Ans: (ii) 6.67 s
14. An aircraft flying in a loop of radius 1 km at 900 km/h has centripetal acceleration of:
(i) 25 m/s²
(ii) 50 m/s²
(iii) 62.5 m/s²
(iv) 75 m/s²
Ans: (iii) 62.5 m/s²
15. In how many independent directions can a vector in a plane be resolved?
(i) 1
(ii) 2
(iii) 3
(iv) 4
Ans: (ii) 2
