1. The energy released on
account of the motion of a body is termed as the:
a. potential energy
b.
kinetic energy
c.
relative velocity
d. None of these
2.
Kilowatt is the measuring unit of:
a.
Power
b. Current
c.
Work
d. energy
3.
In which unit can we measure food energy?
a.
Calorie
b. Keloin
c.
Joule
d. Erg
4.
The conservation of energy principle refers to the fact that:
a. it is essential not to
waste natural gas and oil, for these are limited in supply
b. solar heating makes use
of the sun’s energy, which would otherwise be wasted
c.
energy can neither be created
nor destroyed
d. nuclear-power plants
recycle spent fuel
5.
One HP is equal to ___ kg per meter per second.
a. 25
b. 50
c.
75
d. 10
6.
When a constant force is applied to a body, it moves with uniform:
a. Speed
b.
Velocity
c.
Acceleration
d. Momentum
7.
‘Parsec’ is a unit of:
a. Weight
b. Time
c.
Speed
d. Distance
8.
Knot is unit of speed of which of the following?
a.
Ship
b. Aeroplane
c.
Light rays
d. Sound waves
9.
A wheel that has 6 cogs is meshed with a larger wheel of 14 cogs.
When the smaller wheel has made 21 revolutions, the number of revolutions made
by the larger wheel is:
a. 12
b. 49
c.
9
d. 4
10.
If rubber tyres replace wheels in bullock carts then:
1. speed of bullock cart
increases
2. load carrying capacity
increases
3. the capacity of bullock
to pull the cart at a stretch increases
4. None of the above
a. 1 & 3correct
b. 2 & 3correct
c.
1 & 2correct
d. 1, 2 & 3correct
11.
Rolling a drum is easier
than pulling it along a road because:
a.
rolling causes less
friction
b. friction is more when the
object is rolled
c.
pulling will damage the drum
d. None of the above
12.
Walking on ice is more difficult than walking on concrete because
ice:
a.
gives less friction
b. gives more friction
c.
is very cold and as such blood gets frozen up
d. being soft, one can get
bogged down into it while walking
13.
What should be done by a car driver if he is caught on the way by
a severe thunder storm and lightening?
a.
He should leave the wheel
and lie down on the ground
b. He should remain inside
the car with its window glasses all pulled up
c.
Park the car beneath a tall tree
d. Just bite a piece of
cotton firmly in between the two rows of teeth
14.
Ball bearings are used in cycles and scooters to:
a. reduce the area of
contact between the two surfaces in contact
b.
reduce friction between
wheel and axle
c.
increase friction between wheel and axle
d. reduce friction between
ground and vehicle
15.
How do the centripetal forces pull a body?
a. Upward
b. Downward
c.
Inwards
d. Outwards
16.
When milk is churned, the cream separates from it due to the:
a. cohesive force
b. frictional force
c.
centrifugal force
d. gravitational force
17.
A body in circular motion requires:
a. centrifugal force
b.
centripetal force
c.
inertial force
d. gravitational force
18.
The rising of ink to the point of nib in a fountain pen is due to:
a. surface tension
b.
capillary action
c.
gravitational attraction
d. None of the above
19.
As one goes up the mountain one suffers from nose bleeding
sometimes. The reason is that
a. blood pressure decreases
at high altitudes
b.
blood pressure increases at high altitudes
c.
as one starts going up,
the pressure of the blood capillaries becomes higher than the outside pressure
d. None of the above
20.
Birds get thrust (forward motion) and lift (upward motion) from:
a.
flapping of wings
b. twisting of feathers
c.
shape of wings which is similar to airplane blades
d. air sacs
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