All Solved MCQs of Chapter 2 Kinematics Class 11
1. To get a resultant displacement of
10 m, two displacement vectors of magnitude 6m and 8m should combined:
(a) Parallel (b) Anti-parallel
(c) At an angle of 45° (d) Perpendicular to each other
2. The velocity of a particle at an instant
is 10 m/s and after 5 sec the velocity of particle is 20m/s. The velocity 3 sec
before in m/s is:
(a)8 (b)4
(c)6 (d)7
3. A ball is thrown upwards with a
velocity of 100 m/s. It will reach the ground after:
(a)10 sec (b)20sec (c)5 sec (d)40sec
4. Two projectiles are fired from
the same point with the same speed at angles of projection 60° and 30° respectively. Which one
of the following is true?
(a) The range will be same (b) Their
maximum height will he same
(c) Their landing velocity will be
same (d) their time of flight will be same
5. The ratio of numerical values of
average velocity and average speed of a body is always:
(a) Unity (b) Unity or less (c)
Unity or more (d) Less than unity
6. If the average velocities of a
body become equal to die instantaneous velocity, body is said to be moving
with:
(a) Uniform acceleration (b) Uniform
velocity (c) Variable velocity d) Variable acceleration
7. At the top of a trajectory of a
projectile, the acceleration is:
(a) Maximum (b) Minimum (c) zero
(d)g
8. At what angle the range of
projectile becomes equal to the height of projectile?
(a)65° (b)45 (c)76° (d)30°
9. The angle at which dot product
becomes equal to the cross product is:
(a)65° (b)45° (e)76°
(d)30°
10. If the dot product of two non-zero vectors vanishes: the vectors will be:
(a) In the same direction (b)
opposite direction to each other (c) Perpendicular to each other (d) zero
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