WorksheetsUjian Fisika TPPU 4C 2020
Total questions: 56
Worksheet time: 58mins
A driver takes 0.20s to apply the brakes after he sees a need for it. This is called the reaction time of the driver. If he is driving at a speed of 54 km/h and the brakes cause a deceleration of 6.0 m/s2, find the distance travelled by the car after he sees the need to put the brakes.
18.75m
225 m
21.5 m
d. 12 m
Which one of the following do you think has a mass of about 1500 kg?
A bicycle
An average car
A Jumbo jet
A large truck
Which one of the following do you think has an area of about 200 m2?
The surface of a table tennis table
A tennis court
A football field
A small town
Which one of the following do you think has a volume of about 33 m3
A shipping container
A small apartment
A three-bedroom house
A cathedral
How many seconds are there in one week?
60,480 seconds
432,000 seconds
604,800 seconds
1,036,800 seconds
Unbalanced forces make an object:
Come to rest
Move at a constant velocity
Accelerate.
Explode
The unit of force is:
The Kelvin
The Newton
The Joule
The Watt
The point through which the whole weight of the body acts is called
Balance force
Center of gravity
Equilibrium
Moment
Where will be the centre of gravity of a uniform rod lies?
At its end
At its middle point
At its centre of its cross sectional area
Depends upon its material
Where the center of gravity of a circle lies?
At its centre
Anywhere on its radius
Anywhere on its circumference
Anywhere on its diameter
What is the dimension of strain?
LT-2
N/m2
N
Dimensionless
Some structural members subjected to a long time sustained loads deform progressively with time especially at elevated temperatures. What is such a phenomenon called?
Fatigue
Creep
Creep relaxation
Fracture
How do we calculate pressure?
Pressure = weight x area
Pressure = mass ÷ area
Pressure = force ÷ area
Pressure = volume : area
How can we increase pressure?
Reducing surface area
Increasing surface area
Reducing force
Reducing volume
How can we decrease pressure?
Reducing surface area
Increasing force
Reducing force
Increasing volume
What are the units for pressure?
Newtons per square centimetre
Pascals
Newton metres
Meter per sconds
What do waves transfer?
Energy but not matter
Energy and matter
Pressure and anergy
Matter but not Energy
What is the name of the distance from peak to peak of a wave?
Wavelength
Amplitude
Period
Frequency
What is the general name for waves that require a medium to vibrate?
Electromagnetic
Mechanical
Longitudinal
Transverse
What is the unit for time period?
Metres (m)
Hertz (Hz)
Seconds (s)
Kilogram (Kg)
What is the speed of sound in air?
300,000,000 m/s
330 m/s
1,500 m/s
333 km/h
What is the name given to a ray of light directed at a plane mirror?
The incident ray
The gama ray
The normal
The reflected ray
A light ray meets a plane mirror at 40° to the mirror. What is the angle of reflection?
40°
50°
80°
120°
When a ray of light passes from air into water its speed changes and it may be bent. What is this process called?
Reflection
Refraction
Dispersion
Incident
What are the particles responsible for transferring electrical energy from a cell, through conducting wires in an electric circuit?
Free electrons
Protons
Coulombs
Volts
What is the unit of electric charge?
Coulomb C
Ampere A
Volts V
Watt W
What is the unit of electric current?
Coulomb C
Ampere A
Volts V
Watt W
What instrument is used to measure electric current?
A voltmeter
An ammeter
A current meter
Galvanometer
What is the unit of electrical resistance?
Coulomb
Ohm
Volt
Ampere
Which equation correctly links voltage V, current I and resistance R?
V = I x R
V = I ÷ R
V = R ÷ I
V = I x R x t
What happens to the resistance of a metal as temperature increases?
Resistance remains unchanged
Resistance increases
Resistance decreases
Voltage drop
Which equation correctly links electric energy, time t, voltage V and current I ?
Electric energy = (V x I)/t
Electric energy = (V / I) /t
Electric energy = I x t x V
Electric energy = I x V
Which equation correctly links electric power P, voltage V and current I?
P = V x I
P = I/V
P = V/I
P = V x A
Which combination of magnetic poles will repel each other?
North and north
North and south
South and North
South and South
Which of these is a magnetic material?
Iron
Copper
Gold
Wood
Where a magnetic is field strongest?
In the middle of each field line
Where the arrow is marked on each field line
Where the field lines are closest together
In the middle of each electric line
What is another name for electromagnetic induction?
The motor effect
The generator effect
A solenoid
Magnetic field
What is the name of the a.c. generator used in a car?
An indicator
A starter motor
An alternator
Tesla
What is the function of a transformer?
To transfer magnetic fields
To connect separate circuits together
To change the size of the voltage of an alternating current
To transfer electrostatic
Which type of current makes a transformer work?
A.C.
D.C.
U.V.
EMF
What happens to the molecules in a liquid as it gets hotter?
Speed up
Slow down
Stay at the same speed
No motion
What happens to the molecules in a solid as it gets hotter?
Start vibrating
Vibrate faster
Vibrate slower
No vibrate
What is a flow of charged particles called?
Potential difference
Resistance
Current
Induction
What is potential difference also called?
Current
Voltage
Resistance
Magnetic force
What charge will a duster have if it has lost electrons?
Positively charged
Uncharged
Negatively charged
Repel
What force is there between a positively charged object and a negatively charged object?
Attraction
No force acts
Repulsion
Reflaction
Why does a Van de Graaff generator make a person's hair stand on end?
Each strand of hair picks up a different charge and repels each other
Each strand of hair picks up the same charge and repels each other
Each strand of hair picks up a different charge and attracts each other
Each strand of hair picks up the same charge and attracts each other
