GENERAL INSTRUCTIONS (Please read the following instructions very carefully)
1. Question marks are mentioned with each Question.
2. Please write neat and clean hand-writing on Answer Sheet. Use Margin on right side and left side of Answer Sheet.
3. Do not refresh or back page.
4. Do not click the button Submit Test before completing the paper on Answer Sheet.
5. This is a ONE TIME attempt test. Once started, it cannot be reversed or attempted again.
6. Take photo of all the Sheets and make single pdf file.
1
Which of the following is not an example of positive work done by force _____________.
Throwing a stone
A man standing at a place
Pushing a table
Moving a chair
2
Work done can be zero if the angle between displacement and force is __________________.
Acute
Obtuse
900
1800
3
The work done is positive when there is net displacement in the direction of force this is possible when the angle between the force and displacement is an ___________ angle.
4
Expression of kinetic energy in terms of momentum is ______________.
5
Displacement is a ____________ .
Vector quantity
Scalar quantity
Both a and b
None of these
6
When brakes are applied to a moving vehicle, the work done by the braking force is _______________.
Zero
Positive
Negative
7
When a spring is compressed than the force applied by the spring, than _____________ work is done.
8
SI unit of kinetic energy is _______________
newton(N)
joule(J)
9
If the displacement in opposite to the Force applied on a object, than ________________ work is done.
10
Kinetic energy of a body moving with speed 10 m/s is 30 J.If its speed becomes 30 m/s, its kinetic energy will be
10 J
90 J
180 J
270 J
11
A player kicks a ball of mass 250 g placed at the centre of a field. The ball leaves his foot with a speed of 8 m/s. Find the work done by the player on the ball.
8 J
4 J
6 J
0.8 J
12
The unit Ns is equivalent to
J
Nms
13
Work is always done on a body when
a force acts on it
it moves through a certain distance
it experiences an increase in energy through a mechanical influence
none of the above
14
Which of the following are correct :
(a) When a horse pulls a cart , the applied force and the displacement are in the same direction.
(b) While kicking a football the displacement occur in the direction of force .
(c) When a body is falling down from some height the direction of force and the displacement are in the same direction.
Only (a) and (b) are correct.
Only (b) and (c) are correct.
Only (a) and (c) are correct.
All of these.
15
The kinetic energy of a ball of mass 500g moving at a speed 42 cm/s is ________________.
4.2 J
5.44 J
4.41 J
3.20 J