Home
E-Books
Jobs
News
Results
Competition Exams
Admissions
Generate Test
Make Quiz
mcqs of
,
1 : If a car doubles its speed, its kinetic energy will be:
A
:
(a) the same
B
:
(b) doubled
C
:
(c) increased to three times
D
:
(d) increased to four times
2 : The Sl unit of power is:
A
:
(a) joule
B
:
(b) newton
C
:
(c) watt
D
:
(d) second
3 : The power of a water pump is 2 kW. The amount of water it can raise in one minute to a height of 5 metres is:
A
:
(a) 1000 litres
B
:
(b) 1200 litres
C
:
(d) 2400 litres
D
:
(c) 2000 litres
4 : A joule can also be written as:
A
:
(a) kg m * s ^ - 2
B
:
(b) kg ms
C
:
(c) kg * m ^ 2 * s ^ - 3
D
:
(d) kg * m ^ 2 * s ^ - 2
5 : Work done is maximum when the angle between the force F and the displacement d is:
A
:
(a) 0 deg
B
:
(b) 30 deg
C
:
(c) 60 deg
D
:
(d) 90 deg
6 : The magnitude of momentum of an object is doubled, the kinetic energy of the object will:
A
:
(a) double
B
:
(b) increase to four times
C
:
(c) reduce to one-half
D
:
(d) remain the same
7 : The energy possessed by a body by virtue of its position is:
A
:
(a) kinetic energy
B
:
(b) potential energy
C
:
(c) chemical energy
D
:
(d) solar energy
8 : A bullet of mass 0.05 kg has a speed of 300m * s ^ - 1 Its kinetic energy will be:
A
:
(a) 2250 J
B
:
(b) 4500 J
C
:
(c) 1500J
D
:
(d) 1125J
9 : Which of the following is not renewable energy source?
A
:
(a) Hydroelectric energy
B
:
(b) Fossil fuels
C
:
(c) Wind energy
D
:
(d) Solar energy
10 : one house power is equal to :
A
:
740 W
B
:
746W
C
:
750W
D
:
756W
11 : If the direction of motion of the forces is perpendicular to the direction of motion of the body then work done will be:
A
:
Maximum
B
:
Minimum
C
:
zero
D
:
none of above
12 : The work done will be zero when the angel between the force and distance is:
A
:
450
B
:
600
C
:
900
D
:
1800
13 : energy has basic forms:
A
:
newton
B
:
joule
C
:
weber
D
:
newton second
14 : The combination of kinetic and potential energy is called:
A
:
Nuclear energy
B
:
Mechanic energy
C
:
Chemical energy
D
:
Thermal energy
15 : The energy of a body possess by virtue of its motion is called:
A
:
kinetic energy
B
:
potential energy
C
:
chemical energy
D
:
mechanical energy
16 : When a body is lifted through a height h, the work done work on it appears in the form of its:
A
:
Kinetic energy
B
:
Potential energy
C
:
elastic energy
D
:
Geothermal energy
17 : The energy store is an compressed or stretched spring is called:
A
:
Gravitational potential energy
B
:
Elastic potential energy
C
:
thermal potential energy
D
:
chemical potential energy
18 : hammer raised up has energy:
A
:
Potential energy
B
:
Geothermal energy
C
:
waste energy
D
:
chemical energy
19 : Salter Duck has parts:
A
:
Two
B
:
Three
C
:
four
D
:
Five
20 : the energy is the stretched bow is :
A
:
Elastic energy
B
:
Sound energy
C
:
heat energy
D
:
kinetic energy
21 : How many forms potential energy have?
A
:
three
B
:
four
C
:
five
D
:
six
22 : The energy in the chemical of a battery is called:
A
:
Elastic potential energy
B
:
Nuclear energy
C
:
Chemical energy
D
:
Thermal energy
23 : The energy of a body possesses by virtue of its motion is called?
A
:
kinetic energy
B
:
mechanical energy
C
:
potential energy
D
:
chemical energy
24 : The energy does not remain available for doing some useful work and may be called:
A
:
Sound energy
B
:
Geothermal energy
C
:
Chemical energy
D
:
Waste ate energy
25 : The resources of energy which are replaced by new ones after their use are called:
A
:
Dug
B
:
Biomass
C
:
Non-renewable
D
:
Renewable energy
26 : formual of potential energy is :
A
:
PE=mgh
B
:
PE=mg/h
C
:
PE=mh
D
:
PE=mh/g
27 : When water is allowed to fall from height:
A
:
The P.E is changed into K.E.
B
:
The P.E is remain the same
C
:
C) The K.E is changed into P.E
D
:
The p.E becomes zero
28 : Solar cells is also:
A
:
Solar panel
B
:
Solar calculators
C
:
Electric generation
D
:
Photo voltaic cells
29 : Pakistan also run nuclear power station at:
A
:
Karachi
B
:
Chashma
C
:
Lahore
D
:
Both a and b
30 : The energy of body possessed due to its position or deformation is known as:
A
:
mechanical energy
B
:
kinetic energy
C
:
Potential energy
D
:
thermal energy
31 : Formula of work done is :
A
:
w=fxs
B
:
w=Fxt
C
:
w=F/S
D
:
W=t/f
32 : The efficiency percentage of an electric lamp is:
A
:
5 per
B
:
15 per
C
:
10 per
D
:
20 per
33 : one joule is equal to:
A
:
1N/1m
B
:
1N x 1m
C
:
1m/1N
D
:
1N2/1m2
34 : SL unit of energy has ____ basic forms.
A
:
Newton
B
:
Joule
C
:
four
D
:
five
35 : The energy stored in dam is:
A
:
electrical energy
B
:
Potential energy
C
:
Kinetic energy
D
:
thermal energy
36 : Which of the following biggest source of energy:
A
:
Dam
B
:
Sum
C
:
Tumels
D
:
Solar
37 : Which of the following is non- renewable resources?
A
:
Fossil
B
:
Tidal energy
C
:
Geothermal energy
D
:
Solar energy
38 : If the velocity of a body becomes double , then its kinetic energy will:
A
:
remain the same
B
:
Become double
C
:
Become four times
D
:
Becomes half
39 : The electricity produced from the power of falling water is called:
A
:
Hydrogen generation
B
:
Reservoir
C
:
Tumels
D
:
Dams
40 : Which example of kinetic energy is correct:
A
:
Running water
B
:
Waving wind
C
:
Both a and b
D
:
None of these
41 : Which of the following is fossil fuel:
A
:
Oil
B
:
Coal
C
:
Natural gas
D
:
All of these
42 : Which of the following is non- readable resources?
A
:
Fossil fuels
B
:
Tidal energy
C
:
Geothermal energy
D
:
Solar energy
43 : The SL unit of power is called:
A
:
watt
B
:
Second
C
:
ms-1
D
:
ms-2
44 : The dirt which is left over after staining dirty water is called:
A
:
Digester
B
:
Biofuel
C
:
Sewage
D
:
Biomass
45 : Rat of doing work is called:
A
:
Energy
B
:
Torque
C
:
Power
D
:
Moments
46 : Which of the following is pollution free?
A
:
Solar power
B
:
Hydroelectric
C
:
Wind
D
:
Wave power
47 : The energy possessed by a virtue of its position relative to the earth?
A
:
gravitation Potential energy
B
:
Elastic potential energy
C
:
chemical Potential energy
D
:
thermal potential energy
48 : Formula of kinetic energy is :
A
:
K.E=mg
B
:
K.E=1/2*mv^2
C
:
K.E=w/t
D
:
K.E=1m/2v2
49 : The formual of power is:
A
:
P=wt
B
:
P=mv
C
:
P=ma
D
:
P=w/t
50 : The ratio of useful output energy and input energy is called:
A
:
Energy
B
:
Power
C
:
Efficiency
D
:
Biomass
51 : Sl unit of work done is :
A
:
Weber
B
:
newton
C
:
Ns
D
:
joule
Physics 9th MCQs || Ilam Ghar
Chapter 5 : Work, Energy and Power
Physics 9th