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PPSC Physics Full Book MCQs With Answers
Question # 1
The band of colours is called.
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Spectrum
Prism
Medley
LASER
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Question # 2
In projectile motion, the body has
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One component of velocity
Two components of velocity
Three components of velocity
No component of velocity
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Question # 3
Bernoulli's equation is Applica table to points
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In a steady flowing liquid
In a streamline
In a straight line perpendicular to steamline
In any non viscous liquid
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Question # 4
Which six particles and their antiparticles interact by the weak interaction.
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Leptons
Hadrons
Muons
pi mesons
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Question # 5
Which one of the following spectra series is in the ultraviolet region.
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Lyman series
Paschen series
Brackett series
Plund series
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Question # 6
In an isobaric process there is no.
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Pressure change
Internal energy change
Heat exchanged
volume change or work done
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Question # 7
Birds planes and boats are streamlined to reduce
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Turbulence
Thrust
Drag
Lift
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Question # 8
In a parallel resonant circuit, at resonance
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Current is maximum
Voltage is maximum
Impedance is minimum
Impedance is zero
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Question # 9
The maximum K.E of photo electrons depends upon
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Energy of incident radation
Frequency of incident radiation
Wavelength of incident radiation
Mass of incident radiation
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Question # 10
Which of the following is a unit of electric field strength.
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c m-1
v m-2
N C-1
N V-1
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Question # 11
Hearing damage is possible at sound pressure of
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0 dB
50 dB
130 dB
195 dB
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Question # 12
The characteristic of an image formed by a plane mirror is.
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It is of the same size as the object
It is laterally inverted
It is upright
All of the above
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Question # 13
What is the quantitative description of the effect of radiation on the living tissue.
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Radiation dosimetry
Radioactive dating
Telemetry
Dosage
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Question # 14
The value of voltage or current that exists in a circuit at any instant of time measured from some reference point is its.
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Peak value
Peak to peak value
Instantaneous value
Average value
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Question # 15
Which of the following are defects is lenses.
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Chromatic aberration
Spherical aberration
Astigmation
All of the above
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Question # 16
What would be the magnitude and direction of acceleration which would made the spring balance reading zero.
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Zero
1 m s-2 upward
9.8 m s-2 upward
9.8 m s-2 downward
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Question # 17
A force of 10 N is acting along z-axis, its component along x -axis and y-axis is
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2 N , 8 N
3 N, 7 N
5 N each
Zero
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Question # 18
Which material has the larges resistivity.
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Silver
Germinium
Amber
Sulphur
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Question # 19
X-rays can cause
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Malaria
Dysentery
Cancer
Blood pressure
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Question # 20
When a solid is melting the temperature remains constant even through heat is being supplied because the
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Heat is being used to break up the intermolecular bonds
Solid is not absorbing any heat
Molecules are moving faster
Molecules are farther a part
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Question # 21
The law of equation of energy is applicable to the system whose constituents are.
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At rest
In orderly motion
in random motion
Moving at constant speed
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Question # 22
What would be the colour of sky through hour the day .If the earth has no atmosphere.
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Blue
Red
White
Black
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Question # 23
The unit of magnetic induction is.
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weber -metre
weber -metre 2
weber-meter-2
weber-metre-1
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Question # 24
On which factor the self induction does not depends upon.
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Number of turns of the coil
the core material
Weight of the coil
Area of the cross section of the coil
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Question # 25
What is the energy equivalent to amu in Me V
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0.931 MeV
9.31 MeV
93.1 MeV
931 MeV
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Question # 26
The magnetic field inside a solenoid is
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Zero
Infinite
Uniform
Non uniform
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Question # 27
An immersion heater rated at 150 W is fitted into a large block of ice at 0 oC. The specific latent heat of fusionism 300 J g-1. How long does it take to melt 10 g of ice.
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5 s
10 s
15 s
20 s
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Question # 28
A magnet is pushed horizontally towards a coil of insulated wire inducting an emf in the coilin which direction does the coil try to move.
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Downwards
Upwards
Away from the magnet
Towards the magnet
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Question # 29
The emission of electrons from a metal surface when exposed to light of suitable frequency is called.
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Pair production
Compton effect
Photo electric effect
Zeeman effect
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Question # 30
A deuteron is
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A type of proton
A proton neutron bounded to gather.
A type of beta particle
A type of neutron
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Question # 31
The immediate cause of alternating currrent in the secondary coil of a transformer is
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A changing electric field
a changing magnetic field
The motion of primary coil
The iron core of the trnasformer
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