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Free download in PDF Class 11 Physics Chapter 4 Motion In a Plane Multiple Choice Questions and Answers for Board, JEE, NEET, AIIMS, JIPMER, IIT-JEE, AIEE and other competitive exams. MCQ Questions for Class 11 Physics with Answers were prepared based on the latest exam pattern. These short solved questions or quizzes are provided by Gkseries. These will help the students for preparation of their examination./p>
(1)
One radian is defined to be the angle subtended where the arc length S is exactly equal to the?
[A]
radius of the circle.
[B]
diameter of the circle.
[C]
circumference of the circle.
[D]
half of radius of the circle.
Answer: radius of the circle.
(2)
To attain maximum range, the projectile must be launched at an angle of?
[A]
0°
[B]
45°
[C]
90°
[D]
60°
(3)
A body makes a displacement of 4 m due East from a point O and then makes displacement of 3 m due North . Its resultant displacement from O
[A]
7 m
[B]
1 m
[C]
5 m
[D]
1 . 2 m
(4)
A frictional track ABCDE ends in a circular loop of radius R, body slides down the track from point A which is at a height h of 5 cm. Maximum value of R for the body to successfully complete the loop is:
[A]
15/4 cm
[B]
5 cm
[C]
10/3 cm
[D]
2 cm
(5)
The dimensional formula for angular velocity is
[A]
T-1
[B]
LT-1
[C]
L-1T-1
[D]
L-1T
(6)
The displacement of a particle is given by the expression y = at + bt2 , where a and b are constants . The acceleration of the particle at any instant is given by
[A]
2b
[B]
zero
[C]
a + 2b
[D]
at + 2b
(7)
Small angle produces?
[A]
straight trajectory
[B]
steep trajectory
[C]
flat trajectory
[D]
high trajectory
(8)
Centripetal acceleration is the acceleration which is always directed towards the centre of the?
[A]
Parallelogram
[B]
square
[C]
circle
[D]
ellipse
(9)
The angle between centripetal acceleration and tangential acceleration is?
[A]
180°
[B]
0°
[C]
90°
[D]
45°
(10)
A bucket containing water is tied to one end of a rope of length 2.5 m and rotated about the other end in a vertical circle. What should be the minimum velocity of the bucket at the highest point, so that the water in the bucket will not spill? (g = 10 m/s2)
[A]
7 m/s
[B]
4 m/s
[C]
2.5 m/s
[D]
5 m/s
(11)
Which is a constant for a freely falling object?
[A]
displacement
[B]
velocity
[C]
acceleration
[D]
speed
(12)
The total flight requires a time that is?
[A]
four times the time necessary to reach the maximum height.
[B]
thrice the time necessary to reach the maximum height
[C]
equal to the time necessary to reach the maximum height.
[D]
twice the time necessary to reach the maximum height
Answer: twice the time necessary to reach the maximum height
(13)
One ° (1°) is equal to?
[A]
0.1745 rad
[B]
0.01745 rad
[C]
0.001745 rad
[D]
7.1745 rad
(14)
The path followed by a projectile is called its?
[A]
Territory
[B]
Treasury
[C]
Tractor
[D]
Trajectory
(15)
A cyclist goes round a circular path of circumference 343 m in s. The angle made by him, with the vertical is
[A]
44°
[B]
42°
[C]
43°
[D]
45°
(16)
Centripetal acceleration is the acceleration which is always directed towards the centre of the?
[A]
Parallelogram
[B]
square
[C]
circle
[D]
ellipse
(17)
A body of mass m performing UCM with frequency n along the circumference of circle having radius r, force is given by
[A]
4pnm2
[B]
4p2n2m
[C]
p2n2mr
[D]
1/2 pnm2
(18)
The horizontal distance from the origin (x=O, y=O) to the point where the projectile returns (x = R, y=O) is called?
[A]
Vertical component of the projectile
[B]
Trajectory of the projectile
[C]
maximum height of the projectile
[D]
Range of the projectile
Answer: Range of the projectile
(19)
A cyclist is moving in a circular track of radius 80 m, with a velocity of 36 km/hour. In order to keep his balance, he has to lean inwards from the vertical through an angle q. If g = 10 m/s2, then q is given by
[A]
tan-1 (1/8)
[B]
tan-1 (1/4)
[C]
tan-1 (4)
[D]
tan-1 (2)
(20)
A particle revolves round a circular path. The acceleration of the particle is
[A]
zero
[B]
along the circumference of the circle
[C]
along the tangent
[D]
along the radius
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