If the gradient of a graph is negative, then the acceleration is
A.
positive
B.
negative
C.
zero
D.
1
Answer»
B. negative
4.
If a student drops a stone from a cliff of height 30 m and the time it takes to reach the ground is 2.6 s, then the acceleration due to gravity is
A.
$$$9ms^{-2}$$$
B.
$$$10ms^{-2}$$$
C.
$$$4ms^{-2}$$$
D.
$$$8.8ms^{-2}$$$
Answer»
D. $$$8.8ms^{-2}$$$
5.
Gradient of line of velocity-time graph is tells us the
A.
velocity
B.
acceleration
C.
distance
D.
time
Answer»
B. acceleration
6.
A stone is thrown upwards with initial velocity of $$$20ms^{-1}$$$, the height that stone will reach would be
A.
20 m
B.
30 m
C.
40 m
D.
50 m
Answer»
A. 20 m
7.
Projectile will attain its maximum range, if it is fired at an angle of
A.
30°
B.
47°
C.
90°
D.
45°
Answer»
D. 45°
8.
Horizontal component of a bouncing ball is
A.
affected by gravity
B.
unaffected by gravity
C.
affected by weight
D.
affected by contact force
Answer»
B. unaffected by gravity
9.
When ball having a projectile motion is rising up, it
A.
decelerates
B.
accelerates
C.
rises up with constant acceleration
D.
acceleration becomes zero
Answer»
A. decelerates
10.
Equation of motion can be used for
A.
straight line motion only
B.
curved motion only
C.
motion along the circular path
D.
all types of motion
Answer»
A. straight line motion only
11.
Acceleration of free fall depends on the
A.
surface
B.
weight of object
C.
distance from center of Earth
D.
size of object
Answer»
B. weight of object
12.
If initial velocity of an object is zero, then distance covered by it in time t and acceleration of $$$9.8ms^{-2}$$$ would be
A.
$$$2.9\:t^{2}$$$
B.
$$$3\:t^{2}$$$
C.
$$$4\:t^{2}$$$
D.
$$$4.9\:t^{2}$$$
Answer»
D. $$$4.9\:t^{2}$$$
13.
As the ball falls towards the ground, its velocity
A.
increases
B.
decreases
C.
remains constant
D.
becomes zero
Answer»
A. increases
14.
Gradient of velocity-time graph tells us about object's
A.
velocity
B.
displacement
C.
distance
D.
acceleration
Answer»
D. acceleration
15.
An object whose velocity is changing is said to be in a state of
A.
acceleration
B.
rest
C.
equilibrium
D.
Brownian motion
Answer»
A. acceleration
16.
Acceleration of train when it is moving steadily from $$$4.0\:ms^{-1}$$$ to $$$20\:ms^{-1}$$$ in 100s is
A.
$$$1\:ms^{-2}$$$
B.
$$$2\:ms^{-2}$$$
C.
$$$0.16\:ms^{-2}$$$
D.
$$$3\:ms^{-2}$$$
Answer»
C. $$$0.16\:ms^{-2}$$$
17.
If we get a straight line with positive slope then its acceleration is
A.
increasing
B.
decreasing
C.
zero
D.
constant
Answer»
D. constant
18.
If a spinster staring from rest has acceleration of $$$5ms^{-2}$$$ during 1st 2.0s of race then her velocity after 2 s is
A.
$$$20ms^{-1}$$$
B.
$$$10ms^{-1}$$$
C.
$$$15ms^{-1}$$$
D.
$$$5ms^{-1}$$$
Answer»
B. $$$10ms^{-1}$$$
19.
Horizontal distance traveled by a ball if it's thrown with initial velocity of $$$20ms^{-1}$$$ at an angle of 30° is
A.
24 m
B.
56 m
C.
35.3 m
D.
36.3 m
Answer»
C. 35.3 m
20.
If a car starting from rest reaches a velocity of $$$18ms^{-1}$$$ after 6.0 s then its acceleration is
A.
$$$1ms^{-2}$$$
B.
$$$2ms^{-2}$$$
C.
$$$3ms^{-2}$$$
D.
$$$4ms^{-2}$$$
Answer»
C. $$$3ms^{-2}$$$
21.
A train travelling at $$$20m s^{-1}$$$ accelerates at $$$ 0.5ms^{-2}$$$ for 30 s, the distance travelled by train is
A.
825 m
B.
700 m
C.
650 m
D.
600 m
Answer»
A. 825 m
22.
Area under velocity-time graph tells us the
A.
time
B.
acceleration
C.
displacement
D.
velocity
Answer»
C. displacement
Chapter: Alternating Current
23.
If a secondary coil has 40 turns, and, a primary coil with 20 turns is charged with 50 V of potential difference, then the potential difference in the secondary coil would be
A.
50 V in secondary coil
B.
25 V in secondary coil
C.
60 V in secondary coil
D.
100 V in secondary coil
Answer»
D. 100 V in secondary coil
24.
Generators at a power station produce electric power at voltage
A.
45 kW
B.
50 kW
C.
60 kW
D.
25 kW
Answer»
D. 25 kW
25.
Equation which measures alternating voltage is
A.
Vsin ω
B.
sin t
C.
Vo sinωt
D.
V=IR
Answer»
C. Vo sinωt
26.
In transformer, alternating current is induced in
A.
primary coil
B.
secondary coil
C.
iron core
D.
resistor
Answer»
B. secondary coil
27.
High voltages lead to
A.
less power loss
B.
more power loss
C.
high current
D.
high resistance
Answer»
A. less power loss
28.
Graph of alternating current is a
A.
cos wave
B.
tan wave
C.
curve
D.
sine wave
Answer»
D. sine wave
29.
A component that allows only unidirectional current to pass through it is
A.
resistor
B.
inductor
C.
transformer
D.
diode
Answer»
D. diode
30.
Average power dissipated in resistor if sinusoidal p.d of peak value 25V is connected across a 20 Ω resistor is
A.
15.6 W
B.
15 W
C.
16 W
D.
17 W
Answer»
A. 15.6 W
31.
Amount of d.c voltage as compare to Vo is
A.
50%
B.
60%
C.
70%
D.
80%
Answer»
C. 70%
32.
A well designed transformer loses power under
A.
10%
B.
1.20%
C.
0.1%
D.
20%
Answer»
C. 0.1%
33.
Ratio of voltages is equal to ratio of
A.
iron sheets in core
B.
coil
C.
number of turns in coil
D.
all of above
Answer»
C. number of turns in coil
34.
Process in which A.C is converted into D.C is called
A.
induction
B.
rectification
C.
inversion
D.
dispersion
Answer»
B. rectification
35.
Steady d.c voltage is also known as
A.
square velocity
B.
root mean square velocity
C.
root velocity
D.
velocity
Answer»
B. root mean square velocity
36.
Ratio of voltages is inverse ratio of the
A.
transformer
B.
resistor
C.
iron core
D.
current
Answer»
D. current
37.
If output voltage is greater than input voltage, then transformer is
A.
step up
B.
step down
C.
faulty
D.
fatal
Answer»
A. step up
38.
Highest point on AC graph is known as
A.
peak value
B.
amplitude
C.
frequency
D.
wave front
Answer»
A. peak value
Chapter: AS Level Physics
39.
There are three equations of uniformly accelerated motion, the odd one
out is
A.
final_velocity = initial_velocity + (acceleration × time
In order to keep a body moving in a circle, there exists a force on it that
is directed toward the center of the circle. This force is known as
A.
Centrifugal force
B.
Centripetal force
C.
Gravitational Force
D.
magnetic force
Answer»
B. Centripetal force
43.
A rectangle-shaped open-to-sky tank of water has a length of 2 m and a width of 1 m. If the atmospheric pressure is assumed to be 100 kPa and thickness of the tank walls is assumed to be negligible, the force exerted by the atmosphere on the surface of water is
A.
20 kN
B.
50 kN
C.
100 kN
D.
200 kN
Answer»
D. 200 kN
44.
If we have a positive and a negative charge, then force between them is
A.
positive
B.
negative
C.
zero
D.
infinite
Answer»
B. negative
45.
Electrical force exerted by two point charges on each other is inversely proportional to
A.
sum of their charges
B.
product of their charges
C.
distance between them
D.
square of distance between them
Answer»
D. square of distance between them
46.
Unit for pressure used in weather maps is millibar. 1 millibar is equal to
A.
1000 bar
B.
100 kPa
C.
100 Pa
D.
1 atm
Answer»
C. 100 Pa
47.
Speed of stationary waves is
A.
$$$1ms^{-1}$$$
B.
$$$2ms^{-1}$$$
C.
$$$3ms^{-1}$$$
D.
zero
Answer»
D. zero
48.
If charge is placed at infinity, it's potential is
A.
zero
B.
infinite
C.
1
D.
-1
Answer»
A. zero
49.
Most appropriate instrument for measurement of internal and external
diameter of a tube is
A.
vernier callipers
B.
micrometer screw gauge
C.
meter rule
D.
measuring tape
Answer»
A. vernier callipers
50.
When distance from center is doubled then electric field strength will
A.
decrease by the factor of four
B.
increase by factor of four
C.
will be same
D.
decrease by factor of two
Answer»
A. decrease by the factor of four
51.
Liquid A and liquid B exert same amount of pressure on each other, but the density of A is twice the density of B. The height of liquid B is 10 cm, then the height of liquid A would be
A.
5 cm
B.
10 cm
C.
20 cm
D.
40 cm
Answer»
A. 5 cm
52.
Incorrect statement for co-efficient of friction could be that
A.
The coefficient of friction is denoted by the Greek letter µ.
B.
The coefficient of friction is directly proportional to the force of friction
C.
The coefficient of friction is constant even in the conditions of fast slipping and high contact pressure
D.
The coefficient of friction is inversely proportional to the force pressing the surfaces together
Answer»
C. The coefficient of friction is constant even in the conditions of fast slipping and high contact pressure
53.
If we move a positive charge to a positive plate, then potential energy
of charge is
A.
decreased
B.
increased
C.
remains constant
D.
dissipated
Answer»
B. increased
54.
An instrument commonly used for the measurement of atmospheric
pressure is known as
A.
Manometer
B.
Barometer
C.
Calorimeter
D.
Potentiometer
Answer»
B. Barometer
55.
Phase difference between a node and an antinode is
A.
90°
B.
45°
C.
180°
D.
360°
Answer»
C. 180°
56.
Our weight, as measured by the spring weighing machine is equivalent of
A.
The total gravitational force that Earth exerts on us
B.
The total centripetal force required to keep us moving on Earth's axis
C.
The total gravitational force that Earth exerts on us + The total centripetal force required to keep us moving on Earth's axis
D.
The total gravitational force that Earth exerts on us - The total centripetal force required to keep us moving on Earth's axis
Answer»
D. The total gravitational force that Earth exerts on us - The total centripetal force required to keep us moving on Earth's axis
57.
Point where spring oscillates with maximum amplitude is called
A.
node
B.
antinode
C.
fixed end
D.
movable end
Answer»
B. antinode
58.
According to Newton's law of universal gravitation, any two particles of finite mass attract one another with a force which is
A.
Inversely proportional to the product of their masses and directly proportional to the square of their distance apart
B.
Inversely proportional to the product of their masses and directly proportional to their distance apart
C.
Directly proportional to the product of their masses and inversely proportional to their distance apart
D.
Directly proportional to the product of their masses and inversely proportional to the square of their distance apart
Answer»
D. Directly proportional to the product of their masses and inversely proportional to the square of their distance apart
59.
Correct example of vector quantities could be
A.
Distance and Speed
B.
Displacement and Velocity
C.
Distance and Displacement
D.
Speed and Velocity
Answer»
B. Displacement and Velocity
60.
In a stationary wave, nodes are at
A.
fixed points
B.
movable points
C.
there are no nodes
D.
random points
Answer»
A. fixed points
61.
In the formation of stationary waves, at T⁄2 the waves are
A.
out of phase
B.
in phase
C.
diminished
D.
twice the amplitude
Answer»
B. in phase
62.
A vector quantity is one which has
A.
direction as well as magnitude
B.
magnitude only
C.
direction only
D.
no direction, no magnitude
Answer»
A. direction as well as magnitude
63.
Centripetal force is dependent on three factors, the odd one out of these factors is
A.
Mass of the rotating object
B.
Speed of the rotating object
C.
Volume of the rotating object
D.
Path radius
Answer»
C. Volume of the rotating object
64.
Graph of potential energy against distance is
A.
curve
B.
parabolic
C.
hyperbolic
D.
straight line
Answer»
D. straight line
65.
On all instruments like measuring cylinder, pipette and burette, readings are always taken at the bottom of the meniscus of liquid. This is not true for liquids like
A.
Oil
B.
Ink
C.
Mercury
D.
Seawater
Answer»
C. Mercury
66.
In a weather map, lines joining all those regions with same
atmospheric pressure are called
A.
Bars
B.
Millibars
C.
Isobars
D.
Atmospheric bars
Answer»
C. Isobars
67.
For a given system, the minimum frequency of a standing wave is in a
A.
fundamental mode
B.
lowest mode
C.
highest mode
D.
peak mode
Answer»
A. fundamental mode
68.
In an electric field, energy per unit positive charge is
A.
voltage
B.
current
C.
frequency
D.
resistance
Answer»
A. voltage
69.
In Kundt's dust tube, dust accumulates at
A.
nodes
B.
antinodes
C.
at the end
D.
at troughs only
Answer»
A. nodes
70.
A node having twice the frequency of the fundamental is called
A.
half harmonic
B.
harmonic
C.
double harmonic
D.
triple harmonic
Answer»
B. harmonic
71.
If frequency of certain wave is f, then it's velocity is {{}}
A.
v = fλ
B.
v = T⁄λ
C.
T2
D.
1⁄T2
Answer»
A. v = fλ
72.
Origin of gravitational field is
A.
charges
B.
masses
C.
Earth's core
D.
matter
Answer»
B. masses
73.
At separation between a node and antinode, wavelength becomes
A.
λ
B.
λ⁄2
C.
λ⁄4
D.
2λ
Answer»
C. λ⁄4
Chapter: Capacitance
74.
If the plates of capacitor are oppositely charged then the total charge is
equal to
A.
negative
B.
positive
C.
zero
D.
infinite
Answer»
C. zero
75.
Area under current-time graph represents
A.
magnitude of charge
B.
dielectric
C.
amount of positive charge
D.
amount of negative charge
Answer»
A. magnitude of charge
76.
If charge stored on plates of capacitor is large, then capacitance will be
A.
small
B.
large
C.
zero
D.
infinite
Answer»
B. large
77.
insulator which is placed between 2 plates of capacitor is
A.
electric
B.
dielectric
C.
inductor
D.
resistor
Answer»
B. dielectric
78.
Combined capacitance is equal to the
A.
sum of all capacitance of capacitors
B.
product of all the capacitance
C.
difference between the capacitors
D.
average capacitance of capacitors
Answer»
A. sum of all capacitance of capacitors
79.
capacitance and charge on plates are
A.
inversely related
B.
directly related
C.
not related at all
D.
always equal
Answer»
B. directly related
80.
If the capacitors are connected in parallel, then the potential difference across each capacitor is
A.
same
B.
different
C.
zero
D.
infinite
Answer»
A. same
81.
Total capacitance of 300 mF capacitor and a 600 mF in series is
A.
300 mF
B.
500 mF
C.
200 mF
D.
1000 mF
Answer»
C. 200 mF
82.
Work done in charging a capacitor is given by
A.
(1⁄2)QV
B.
2QV
C.
QV
D.
2V
Answer»
A. (1⁄2)QV
83.
Device used to store energy in electrical circuits is
A.
resistor
B.
inductor
C.
capacitor
D.
diode
Answer»
C. capacitor
84.
Energy stored in a 2000 mF capacitor charged to a potential difference of 10 V is
A.
0.12 J
B.
1.3 J
C.
0.10 J
D.
3 J
Answer»
C. 0.10 J
85.
Capacitor is fully charged if potential difference is equal to
A.
e.m.f
B.
current
C.
resistance
D.
power
Answer»
A. e.m.f
Chapter: Charged Particles
86.
An electron is travelling at right angles to a uniform magnetic field of flux density 1.2 mT with a speed of $$$8*10^{6} \: ms ^{-1}$$$ , the radius of the circular path followed by an electron is
A.
3.8 cm
B.
3.7 cm
C.
3.6 cm
D.
3.5 cm
Answer»
A. 3.8 cm
87.
Hall voltage is directly proportional to
A.
current
B.
electric field
C.
magnetic flux density
D.
all of above
Answer»
C. magnetic flux density
88.
Force due to magnetic field and velocity is
A.
at right angles to each other
B.
at acute angles with each other
C.
at obtuse angle with each other
D.
antiparallel to each other
Answer»
A. at right angles to each other
89.
Force on a moving charge in a uniform magnetic field depends upon
A.
magnetic flux density
B.
the charge on the particle
C.
the speed of particle
D.
all of above
Answer»
D. all of above
90.
Electric field strength related to hall voltage is given by
A.
VHd
B.
VH⁄d
C.
VHE
D.
Ed
Answer»
B. VH⁄d
91.
Hall probe is made up of
A.
metals
B.
non metals
C.
semiconductor
D.
radioactive material
Answer»
C. semiconductor
92.
For an electron, magnitude of force on it is
A.
BeV
B.
eV
C.
Be
D.
BV
Answer»
A. BeV
93.
When current is parallel to magnetic fields, force on conductor is
A.
zero
B.
infinite
C.
2 times
D.
same
Answer»
A. zero
94.
Direction of conventional current is
A.
direction of neutron flow
B.
direction of electron flow
C.
direction of flow of positive charge
D.
same as that of electric current
Answer»
C. direction of flow of positive charge
95.
According to the equation ‘r =(mv)⁄(Be)’, the faster moving particles
A.
move in smaller circle
B.
move straight
C.
move in bigger circle
D.
move randomly
Answer»
C. move in bigger circle
96.
In Hall effect, voltage across probe is known as
A.
hall voltage
B.
e.m.f
C.
potential difference
D.
hall potential
Answer»
A. hall voltage
Chapter: Circular Motion in Physics
97.
Angle through which an object has moved is called it's
A.
linear displacement
B.
linear distance
C.
angular displacement
D.
angular distance
Answer»
C. angular displacement
98.
Angular velocity of second hand of clock is 0.105 rad s-1 and length of hand is 1.8 cm, then speed of tip of hand is {{}}
A.
0.189 cm s-1
B.
1 cm s-1
C.
0.189 m s-1
D.
2 m s-1
Answer»
A. 0.189 cm s-1
99.
Object moving along a circular path is
A.
in equilibrium
B.
not in equilibrium
C.
not moving with constant speed
D.
in random motion
Answer»
B. not in equilibrium
100.
At the fairground, the force that balances out our weight is