| 1. | Joule is the unit of ? | |
|
force
|
||
|
work
|
||
|
power
|
||
|
energy
|
||
View Answer
Discuss in Forum
Report Question| 2. | The static friction ? | |
|
bears a constant ratio to the normal reaction between the two surfaces
|
||
|
is independent of the area of contact between the two surfaces
|
||
|
always acts in a direction, opposite to that in which the body tends to move
|
||
|
all of the above
|
||
| 3. | According to Newton's first law of motion ? | |
|
every body continues in its state of rest or of uniform motion, in a straight line, unless it is acted upon by some external force
|
||
|
the rate of change of momentum is directly proportional to the impressed force, and takes place in the same direction, in which the force acts
|
||
|
to every action, there is always an equal and opposite reaction
|
||
|
none of the above
|
||
| 4. | Non-coplaner non-concurrent forces are those forces which ? | |
|
meet at one point, but their lines of action do not lie on the same plane
|
||
|
do not meet at one point and their lines of action do not lie on the same plane
|
||
|
do not meet at one point but their lines of action lie on the same plane
|
||
|
none of the above
|
||
| 5. | An ideal machine is one whose efficiency is ? | |
|
between 60 and 70 %
|
||
|
between 70 and 80%
|
||
|
between 80 and 90%
|
||
|
100%
|
||
| 6. | Which of the following are vector quantities ? | |
|
Angular displacement
|
||
|
Angular acceleration
|
||
|
Angular velocity
|
||
|
all of these
|
||
| 7. | A couple produces ? | |
|
translatory motion
|
||
|
rotational motion
|
||
|
combined translatory and rotational motion
|
||
|
none of the above
|
||
| 8. | During elastic impact, the relative velocity of the two bodies after impact is........the relative velocity of the two bodies before impact ? | |
|
equal to
|
||
|
equal and opposite to
|
||
|
less than
|
||
|
greater than
|
||
| 9. | The ideal angle of banking provided on the curves on roads depends upon ? | |
|
weight of the vehicle
|
||
|
(velocity)² of the vehicle
|
||
|
nature of the road surface
|
||
|
coefficient of friction between the road and vehicle contact point
|
||
| 10. | Which of the following statement is correct in connection ? | |
|
A path, traced by a projectile in the space, is known as
|
||
|
The velocity with which a projectile is projected, is known as the velocity of projection
|
||
|
The angle, with the horizontal, at which a projectile is projected is known as angle of projection
|
||
|
all of the above
|
||