1 |
The dimensions of work are |
MLT<sup>-1</sup>
MLT<sup>-2</sup>
ML<sup>2</sup>T<sup>-2</sup>
ML<sup>-1</sup>T<sup>-1</sup>
|
2 |
The SI unit of work is |
Newton
Joule
Mol
Calorie
|
3 |
When distance is plotted against the force, it is taken along |
x-axis
y-axis
z-axis
None of these
|
4 |
Work is a |
Scalar quantity
Vector quantity
Basic quantity
None of these
|
5 |
Two quantities involved in work are |
Force and speed
Force and velocity
Force and displacement
Force and acceleration
|
6 |
A collision in which K.E. of the system is not conserved is |
Elastic collision
Inelastic collision
3rd low of motion
None of these
|
7 |
Total change in momentum of an isolated system is |
Always (+) ve
Always (-) ve
Has maximum value
Zero
|
8 |
The time rate of change of momentum equals |
Weight
Applied force
Impulse
Mass
|
9 |
The action and reaction never act on |
Same body
Two bodies
many bodies
All of these
|
10 |
A force applied on a body produces acceleration in |
Opposite direction
perpendicular direction
Its own direction
In any direction
|
11 |
A frame of reference stationed at the earth is an |
Inertial frame
None internal frame
Accelerated frame
Laboratory frame
|
12 |
The mass of a body is quantitative measure of its |
Motion
Inertia
Weight
All of these
|
13 |
Newton's laws of motion were published in |
1587
1687
1787
1887
|
14 |
In the absence of air resistance the acceleration of a body will be |
Uniform
Variable
Instantaneous
None of these
|
15 |
The equations of motion hold good for |
Variable acceleration
Uniform acceleration
Centripetal acceleration
All of these
|
16 |
When the car moves with an increasing acceleration then its velocity time graph is always |
Constant
Variable
A straight line
A curve
|
17 |
Average acceleration is a |
Scalar quantity
Vector quantity
<div>(-) ve quantity</div>
None of these
|