SAT Physics

Exam Duration: 120 Mins Total Questions : 100

1 )

How much force is required to change the velocity of a body of mass 2 kg from 40 m/s to 50 m/s in 5 seconds?

(a)
4N
(b)
8N
(c)
10N
(d)
6N

2 )

If the momentum of the body is doubled, the kinetic energy becomes

(a)
doubled
(b)
remains same
(c)
halved
(d)
4 times

3 )

The actual length of the path covered by a body irrespective of its direction is

(a)
Distance
(b)
velocity
(c)
speed
(d)
displacement

4 )

In the following speed-time graph the shaded portion gives

(a)
distance travelled
(b)
average speed
(c)
average velocity
(d)
displacement travelled

5 )

A flying aeroplane has

(a)
only potential energy
(b)
only kinetic energy
(c)
both potential and kinetic energy
(d)
none of these

6 )

The tendency of a body to oppose any change in its state of rest or uniform motion is called as

(a)
force
(b)
inertia
(c)
momentum
(d)
impulse

7 )

An object of mass 1 kg has a P.E of 1J relative to the ground when it is at a height of

(a)
0.102m
(b)
1 m
(c)
9.8 m
(d)
32 m

8 )

Which number indicates where a then no meter should be placed to determine the boiling point of a distillate?

(a)
1
(b)
2
(c)
3
(d)
4

9 )

When we cool a gas below its condensation point, the K.E of its molecules

(a)
increases
(b)
decreases
(c)
remains the same
(d)
first increases then decreases

10 )

An electric bulb converts electrical energy into

(a)
nuclear energy
(b)
sound energy
(c)
mechanical energy
(d)
none of these

11 )

Indra is the Indian name of

(a)
Saturn
(b)
Mars
(c)
Uranus
(d)
Neptune

12 )

In a pressure cooker, the food cooks faster because

(a)
increased pressure lowers the boiling point of water
(b)
decreased pressure raises the boiling point of water
(c)
increased pressure raises, the boiling point of water
(d)
decreased pressure lowers the boiling point of water

13 )

A number of discs, each of momentum P kg m/s are striking a wall at the rate of n discs per hour. The force associated With these discs in Newtons is

(a)
\(\frac { nP }{ 60 } \)
(b)
\(\frac { nP }{ 3600 } \)
(c)
3600nP
(d)
\(\frac { P }{ 3600n } \)

14 )

An anchored boat is rocked by waves whose crests are 150 m apart and whose velocity is 50 mls. How often do the crests reach the boat?

(a)
0.45 s
(b)
3 s
(c)
75 s
(d)
2350 s

15 )

Two coupled vibrating systems are said to be in resonance if their

(a)
amplitudes are equal
(b)
damping factors are equal
(c)
temperatures are equal
(d)
frequencies are equal

16 )

To get three images of single object, one should have two plane mirrors at an angle of

(a)
45⁰
(b)
60⁰
(c)
90⁰
(d)
135⁰

17 )

Name the physical quantity which we get from a S-t graph.

(a)
Speed
(b)
Displacemen t
(c)
Distance
(d)
Time

18 )

The speed-time graph for a particle moving at constant speed is a straight-line to the time axis.

(a)
Parallel
(b)
Perpendicular
(c)
Aligned
(d)
Inclined

19 )

The law that gives a qualitative definition of force is ________

(a)
Newton's second law of motion
(b)
Law of inertia
(c)
Newton's third law of motion
(d)
Law of gravitation

20 )

Impulse = __________

(a)
ma
(b)
Ft
(c)
mv
(d)
(v-u)/t

21 )

The term inertia means which of the following? The tendency of an object to:

(a)
Maintain its mass
(b)
Remain in motion
(c)
Remain in rest or motion
(d)
Stop the motion of other objects

22 )

According to Newton's second law of motion, what causes a change in the motion of an object

(a)
Decrease in inertia
(b)
Change in velocity
(c)
Net force
(d)
Acceleration

23 )

Which statement correctly characterizes momentum, as understood in the physical sciences?

(a)
Momentum is a measure of an object's tendency to continue moving
(b)
An object with a large momentum has a large mass.
(c)
An object with a large momentum has a large velocity.
(d)
The product of mass and velocity is large for an object with a large momentum.

24 )

The unit of power is

(a)
Watt per second
(b)
Joule
(c)
Kilo joule
(d)
Joule per second

25 )

The time period of a simple pendulum on a freely moving artificial satellite is

(a)
Zero
(b)
3 sec
(c)
2 sec
(d)
Infinite

26 )

Kepler's second law regarding constancy of arial velocity of a planet is a consequence of the law of conservation of

(a)
Energy
(b)
Angular momentum
(c)
Linear momentum
(d)
None of these

27 )

Gold is used in

(a)
Thermometers
(b)
Fuel
(c)
Jewellery
(d)
Machinery

28 )

Which metal is found in liquid state at room temperature?

(a)
Fe
(b)
Zn
(c)
Hg
(d)
Al

29 )

When a substance is heated, the particles gain energy and spread out, creating more volume (spaces between the particles). What happens to the mass of a substance when it is heated?

(a)
Mass increases
(b)
Mass decreases
(c)
Mass remains the same
(d)
Mass is lost

30 )

Much of the energy used in Alberta is found in the vast resources of fossil fuels. This type of energy source is useful and stored until we need it. Fossil fuels are considered to be sources of:

(a)
Chemical energy
(b)
Industrial energy
(c)
Biological energy
(d)
Geothermal energy

31 )

When a ray of light is incident normally, the angle of incidence is:

(a)
90⁰
(b)
0
(c)
45⁰
(d)
None

32 )

The refractive index of a denser medium with respect to a rarer medium is:

(a)
1
(b)
Greater than 1
(c)
Smaller than 1
(d)
Negative

33 )

Parallel rays of light entering a convex lens always converge at _________

(a)
Centre of curvature
(b)
The principal focus
(c)
Optical centre
(d)
The focal plane

34 )

A convex lens is called _______

(a)
Converging lens
(b)
Diverging lens
(c)
Both converging and diverging lens
(d)
Refracting lens

35 )

Radius of curvature of a concave mirror is always _______ to the mirror

(a)
Parallel
(b)
Perpendicular
(c)
Inclined at 60°
(d)
Inclined at 45°

36 )

Which of the following statements does not represent ohm's law?

(a)
Current / potential difference = constant
(b)
Potential difference / current = constant
(c)
Potential difference = current x resistance
(d)
Current = resistance x potential difference

37 )

The potential difference required to pass a current 0.2 A in a wire of resistance 20W is _______

(a)
100V
(b)
4 V
(c)
0.01 V
(d)
40 V

38 )

The unit of resistivity is ______

(a)
Ohm
(b)
Ohm / m
(c)
Ohm-m
(d)
Mho

39 )

For which of the following substances, resistance decreases with temperature?

(a)
Copper
(b)
Platinum
(c)
Mercury
(d)
Carbon

40 )

Which of the following is not correct for electrical work?

(a)
W = VQ
(b)
W = VIt
(c)
W = I²Rt
(d)
W = I²RQ

41 )

The current passing through two separate lines (circuits) of our houses is _____ A and _____ A

(a)
5, 10
(b)
5, 15
(c)
10, 15
(d)
2, 5

42 )

The main constituent of LPG is ______

(a)
Methane
(b)
Butane
(c)
Hydrogen
(d)
Propane

43 )

The energy of a thermal neutron is about ________

(a)
0.025 ev
(b)
0.25 ev
(c)
0.0025 ev
(d)
0.00025 ev

44 )

_______ is not a Jovian planet.

(a)
Earth
(b)
Jupiter
(c)
Saturn
(d)
Neptune

45 )

During which period are meteors seen in maximum number?

(a)
January to March
(b)
April to June
(c)
August to November
(d)
November to February

46 )

Each Nakshatra is an angular region of about__________

(a)
15° 30°
(b)
14° 40'
(c)
13° 20'
(d)
12° 30'

47 )

The moon undergoes an angular displacement of ______ in 1 day.

(a)
30°
(b)
15°
(c)
20° 40°
(d)
13° 20'

48 )

A small steel ball is dropped from a low balcony. Ignoring air resistance, which statement describes its motion?

(a)
It falls with constant acceleration.
(b)
It falls with constant-speed,
(c)
It falls with decreasing acceleration.
(d)
It falls with decreasing speed.

49 )

The distance traveled by a body is directly proportional to the time, then the body is said to have:

(a)
Zero speed
(b)
Zero velocity
(c)
Constant speed
(d)
None of these

50 )

Rate of change of angular velocity refer to:

(a)
angular speed
(b)
angular displacement
(c)
eqular acceleration
(d)
None of these

51 )

A stone is thrown vertically upward with an initial velocity u from the top of a tower, reaches the ground with a velocity 3u. The height at the tower is:

(a)
\(\frac{3u^2}{g}\)
(b)
\(\frac{4u^2}{g}\)
(c)
\(\frac{6u^2}{g}\)
(d)
\(\frac{9u^2}{g}\)

52 )

Work done by the force of grazity, when a body is lifted to height h above the ground is:

(a)
zero
(b)
positive
(c)
negative
(d)
none of these

53 )

The potential energy of a boy is maximum when he is:

(a)
standiny
(b)
sleeping on the ground
(c)
sitting on the ground
(d)
sitting on chair

54 )

One horse power is:

(a)
746 W
(b)
550 W
(c)
980 W
(d)
32 W

55 )

The magnitude of inertia of a body is determined by its:

(a)
mass
(b)
weight
(c)
velocity
(d)
acceleration

56 )

Which is the incorrect statement?
A spaceship continues moving in space with uniform speed because:

(a)
no force of friction due to air acts on it
(b)
its mass is zero in space
(c)
no force of gravitation acts on it
(d)
no force of friction due to earth acts on it

57 )

Forces are applied to a uniform beam pivoted at its centre. Which beam is balanced?

58 )

Action-reaction forces:

(a)
act on same body
(b)
act on different bodies
(c)
act along different lines
(d)
act in same direction

59 )

Weight

(a)
is a vector quanity
(b)
of a body in Interplanetary space is maximum
(c)
increases when the bodies go up
(d)
none of these

60 )

The ratio of force and acceleration of a moving body is the measure of its:

(a)
velocity
(b)
momentum
(c)
mass
(d)
impulse

61 )

By Newton's second law, the physical quantity which can be calculated, if we know the magnitude of force on a given mass is:

(a)
velocity
(b)
momentum
(c)
acceleration
(d)
none of the above

62 )

A completely inelastic collision is one in which the two colliding particles

(a)
are separated after the collision
(b)
remain together after the collision
(c)
split into small fragments flying in all directions
(d)
none of the above

63 )

A body moves through a distance of 3m in the following different ways. In which case in the maximum work done?

(a)
When pushed over an inclined plane
(b)
When lifted vertically upward
(c)
When pushed over smooth rollers
(d)
When pushed on a plane horizontal surface

64 )

In the above example, the work done is minimum when the body is

(a)
pushed over an inclined plane
(b)
lifted vertically upward
(c)
pushed over the smooth rollers
(d)
pushed on a plane horizonal surface

65 )

The moon revolves around the earth because the earth exerts a radial force on the moon. Does the earth perform work on the moon?

(a)
No
(b)
Yes, sometimes
(c)
Yes, always
(d)
Cannot be decided

66 )

The displacement x of a particle moving in one dimension, under the action of a constant force, is related to the time by the equation, t=\(\sqrt{x}+3\) where x is in metres and t in seconds. The displacement of the particle when its velocity is zero, is

(a)
0
(b)
6 m
(c)
12 m
(d)
18 m

67 )

Sound travels in air as:

(a)
longitudinal waves
(b)
transverse waves
(c)
torsional waves
(d)
electromagnetic waves

68 )

Sound energy is basically:

(a)
mechanical energy
(b)
electromagnetic energy
(c)
potential energy
(d)
electrical energy

69 )

In the region of compression or rarefaction, in a longitudinal wave the physical quantity which does not change is

(a)
pressure
(b)
mass
(c)
density
(d)
volume

70 )

In case of transverse wave:

(a)
the hump on the -y axis is called trough
(b)
the lowest point the hump on the -y axis is called trough
(c)
the hump on +y axis called trough
(d)
the highest point on the hump on the +y axis is called trough

71 )

Watt sec represents the unit for

(a)
energy
(b)
power
(c)
force
(d)
None of these

72 )

Naval ships called "destroyers" can detect submarines in the sea. The device used by these ships is called

(a)
ultra sonometer
(b)
sonar
(c)
ultrasonograph
(d)
none of the above

73 )

Four students are asked to draw a circuit showing three lamps working in parallel, a cell, and a switch that controls all three lamps. Which student is correct?

74 )

When the current is passing through the straight wire then, the associated magnetic field is

(a)
Straight
(b)
Elliptical
(c)
Circular
(d)
Parabolic.

75 )

Coming of live wire and neutral wire in direct contact causes

(a)
Short-circuiting
(b)
Over-loading
(c)
No damage
(d)
Unknown effect

76 )

When an electric current flows through a long solenoid, magnetic field is set up in and around the solenoid:

(a)
Magnetic field inside the solenoid is non-uniform and weak
(b)
Magnetic field outside the solenoid is uniform and strong
(c)
Magnetic field inside the solenoid increases as we move towards the ends of the solenoid
(d)
Magnetic field of solenoid resembles the magnetic field of the bar magnet

77 )

A soft iron rod can be made an electro-magnet. Which of the following procedures would be adopted to test that the soft iron rod had become a magnet?

(a)
Place the iron rod near a bar magnet and observe if it attracts iron pins
(b)
Place the iron rod near a current carrying wire and observe if it attracts iron pins
(c)
Place the iron rod inside a current carrying solenoid and observe if it attracts iron pins
(d)
None of these.

78 )

Two coil A and B placed close to each other. If current in the coil A is changed, some current will be induced in the coil B. This is because of electromagnetic induction. In this statement:

(a)
Inference is correct but reasoning is not correct
(b)
Inference is incorrect but reasoning is correct
(c)
Inference as well as reasoning are correct
(d)
Neither inference nor reasoning is correct.

79 )

Three rays of light fall on a converging lens as shown.

Which diagram shows the path of the rays after passing through the lens?

80 )

Rays from Sun converge at a point 15 cm in front of a concave mirror. Where should an object be placed so that size of its image is equal to the size of the object?

(a)
15 cm in front of the mirror
(b)
30 cm in front of the mirror
(c)
between 15 cm and 30 cm in front of the mirror
(d)
more than 30 cm in front of the mirror

81 )

You are given water, mustard oil, glycerine and kerosene. In which of these media a ray of light incident obliquely at same angle would bend the most?

(a)
Kerosene
(b)
Water
(c)
Mustard oil
(d)
Glycerine

82 )

A prism ABC (with BC as base) is placed in different orientations. A narrow beam of white light is incident on the prism as shown in Figure. In which of the following cases, after dispersion, the third colour from the top corresponds to the colour of the sky?

(a)
(i)
(b)
(ii)
(c)
(iii)
(d)
(iv)

83 )

The danger signals installed at the top of tall buildings are red in colour. These can be easily seen from a distance because among all other colours, the red light

(a)
is scattered the most by smoke or fog
(b)
is scattered the least by smoke or fog
(c)
is absorbed the most by smoke or fog
(d)
moves fastest in air

84 )

An astronomical telescope 10 times magnification has length of 44cm. The focal length of the objective is

(a)
4 cm
(b)
40 cm
(c)
44 cm
(d)
440 cm

85 )

If a plane mirror reflecting on incident ray is rotated in the plane of incidence through an angle 8, then the reflected ray rotates through

(a)
zero
(b)
θ/2
(c)
θ
(d)
2θ

86 )

An object is placed symmetrically between two plane mirrors set at 37° to each other. The number of imagess

(a)
2
(b)
8
(c)
9
(d)
10

87 )

A lens of Il = 1.5 produces a virtual image of a real object in air. If the whole set up is immersed in water, the image will

(a)
Shift closer to lens
(b)
Shift a way from lens
(c)
remain in same point
(d)
depend on whether concave or convex len

88 )

When refraction of light takes place through a rectangular glass slab, then

(a)
i = r
(b)
i = e
(c)
r = e
(d)
r = i = e

89 )

Parsec is the unit of

(a)
distance
(b)
mass
(c)
time
(d)
pressure

90 )

Pluto is to Yama, as Jupiter is to

(a)
Shukra
(b)
Mangal
(c)
Shani
(d)
Brihaspati

91 )

A circular coil of single turn carrying current produces magnetic field Bo at centre. If the same wire is made into four turns, the field at centre will be