Physics Mcqs – (Science) MCQs Latest For FPSC, PPSC, NTS, KPPSC, SPSC & Other Tests
“ Physics Mcqs “. Tab this page to check “Latest Physics MCQs” for the preparation of competitive mcqs, FPSC mcqs, PPSC mcqs, SPSC mcqs, KPPSC mcqs, AJKPSC mcqs, BPSC mcqs, NTS mcqs, PTS mcqs, OTS mcqs, Atomic Energy mcqs, Pak Army mcqs, Pak Navy mcqs, CTS mcqs, ETEA mcqs and others. The most occurred mcqs of Physics in past papers. Past papers of Physics mcqs. Past papers of Physics MCQs. Physics Mcqs are the necessary part of any competitive / job related exams. The Physics mcqs having specific numbers in any written test. It is therefore everyone have to learn / remember the related Physics mcqs. The Important series of Physics Mcqs are given below:
The dimensions of the coefficient of viscosity are_____________?
A. ML-1T-1
B. M2L1T1
C. M2L-1T-1
D. ML1T-1
Terminal velocity is_____________?
A. Maximum
B. Uniform
C. Uniform and maximum
D. Neither uniform nor maximum
When the body moves with terminal velocity the acceleration in the body become_____________?
A. 0
B. Variable
C. Maximum
D. Infinite
Terminal velocity is given by equation_______________?
A. Vt = gr2/9ρ
B. Vt = 2gr2/9ρ
C. Vt = gr2ρ
D. Vt = 9gr2/2ρ
Terminal velocity of the body is directly proportional to the_______________?
A. The radius of the body
B. Size of the body
C. The diameter of the body
D. Square of the diameter of the body
The flow of ideal fluid is always_______________?
A. Irregular
B. Streamline
C. Turbulent
D. Straight line
The drag force is given by_________________?
A. Pascals law
B. Newtons law
C. Gauss law
D. Stokes law
When fluid is incompressible then________________?
A. The flow of the fluid is the straight line
B. The velocity of the fluid is constant
C. The density of the fluid is constant
D. The volume of the fluid is constant
Irregular flow of fluid is called_______________?
A. Uniform
B. Turbulent
C. Streamline
D. Laminar
According to equation of continuity A1V1 = A2V2 = constant. The constant is equal to_______________?
A. Flow rate
B. Mass of fluid
C. Volume of fluid
D. The density of the fluid
The equation of continuity is obtained by applying in the law of conservation of_____________?
A. Mass
B. Momentum
C. Energy
D. All
Velocity of fluid increases where the pressure is________________?
A. Low
B. Constant
C. High
D. Changes continuously
Speed of efflux can be determined by applying______________?
A. Venture relation
B. Torricelli’s theorem
C. Bernoulli’s theorem
D. All
Blood vessels are______________?
A. Of glass
B. Not rigid
C. Rigid
D. Of rubber
Concentration of red cells in blood is about______________?
A. 40%
B. 25%
C. 50%
D. 75%
A man standing near a fast moving train may fall___________?
A. Away from the train
B. On the train
C. Towards the train
D. On himself
For which position maximum blood pressure in the body have the smallest value ?
A. Sitting on chair
B. Standing straight
C. Sitting on ground
D. Laying horizontally
Two fog droplets have radius 2:3 their terminal velocities are_______________?
A. 2:09
B. 4:09
C. 4:06
D. 4.3
Bernoulli’s equation is obtained by applying the law of conservation of ________________?
A. Momentum
B. Energy
C. Mass
D. Fluid
Venturi meter is used to measure_________________?
A. Fluid pressure
B. Fluid speed
C. Fluid density
D. None
In cricket when a bowler produce reverse swing the ball will move towards______________?
A.The shinning side of the ball
B. The seam of the ball
C. Rough side
D. Goes straight
Stokes law is applicable if body has __________shape?
A. Square
B. Rough
C. Circular
D. Spherical
One torr is equal to_________________?
A. 1333 Nm-2
B. 1.333 Nm-2
C. 13.33 Nm-2
D. 133.3 Nm2
Systolic pressure is called_______________?
A. Normal blood pressure
B. High blood pressure
C. Low blood pressure
D. Abnormal blood pressure
The instrument used to measure blood pressure is called____________?
A. Blood pressure
B. Venturimeter
C. Sphygmomanometer
D. Sonometer
A chimney works best if air exposed to the chimney is______________?
A. Moving
B. Stationary
C. Moving slowly
D. Moving fast
The effect of the decrease in pressure with the increase of the speed of the fluid in a horizontal pipe is known as______________?
A. Torricelli effect
B. Bernoulli effect
C. Venturi effect
D. Stokes effect
Physics Mcqs
Ideal fluid is_______________?
A. Steady flow
B. Incompressible
C. Non-viscous
D. Possess all properties
Which one is venturi relation ?
A. P1 – P2 = 1/2 ρV22
B. A1 V1 = A2 V2 = constant
C. P = 1 /2ρV2 = ρgh = constant
D. V2 = 2g (h1-h2)
Laminar flow usually occurs at speeds_____________?
A. Low
B. Very high
C. High
D. Some time high and some time low
Sphygmomanometers measures blood pressure ?
A. Some time static and sometimes dynamic
B. Dynamically
C. Statically
D. None of these
The carburettor of a car is an application of_______________?
A. Bernoulli equation
B. Venturi meter
C. Both A and B
D. None
The blood flow is _______________ flow at systolic pressure?
A. Laminar
B. Mixed
C. Turbulent
D. None
The profile of aeroplane wing which lifts it up is called as_____________?
A. Curved profile
B. Aerofoil profile
C. Wing shape
D. None of these
Bernoulli’s equation is applicable for_________________?
A. Turbulent flow
B. Laminar flow
C. Both laminar and turbulent flow
D. None of these
The density of human blood is nearly equal to____________?
A. Water
B. Mercury
C. Honey
D. Oil (kerosene)
The speed of the fluid is maximum in the venturi meter at_______________?
A. Divergent duct
B. Convergent duct
C. Throat
D. None of these
The normal blood pressure range for a human body is______________?
A. 100 to 80 torr
B. 120 to 80 torr
C. 120 to 60 torr
D. 60 to 140 torr
For ___________ flow the path of the fluid particles cannot be tracked?
A. Streamline
B. Laminar
C. Turbulent
D. Both A and B
In vibratory motion_________________?
A. K.E. remain constant
B. P.E. remains constant
C. total energy remains constant
D. total momentum remains constant
The waveform of S.H.M. is________________?
A. Square wave
B. Sine wave
C. Standing wave
D. None
S.I unit of frequency is_________________?
A. Radian
B. Vibration S-2
C. Hertz
D. ms-1
In S.H.M. the velocity of a particle is maximum at________________?
A. mean position
B. middle between the mean and extreme position on the right side
C. extreme position
D. middle between the mean and extreme position on the left side
The acceleration of a projection on the diameter for a particle moving along a circle is_______________?
A. wx2
B. w2x
C. w2x
D. wx2
The total energy of a body executing S.H.M is directly proportional to________________?
A. The amplitude
B. The square root of amplitude
C. Reciprocal of amplitude
D. Square of an amplitude
The time period of a second pendulum is______________?
A. 3 seconds
B. 4 seconds
C. 2 seconds
D. 6 seconds
The length of the second pendulum is________________?
A. 99 cm
B. 100 cm
C. 99.2 cm
D. 98 cm
If the length of the second pendulum becomes four times, then its time period will become________________?
A. 4 times
B. 8 times
C. 6 times
D. 2 times
The force responsible for the vibratory motion of the simple pendulum is_________________?
A. mg tonθ
B. mg sinθ
C. mg cosθ
D. mg
The frequency of the second pendulum is________________?
A. 1.5 hertz
B. 0.5 hertz
C. 1 hertz
D. 2.5 hertz
Simple harmonic motion is a type of________________?
A. Circular motion
B. Rotational motion
C. Musical arrangement
D. Vibratory motion
The SI unit of force constant is identical with that of__________________?
A. Pressure
B. Force
C. Surface tension
D. Loudness
When the amplitude of a wave becomes double its energy become_________________?
A. One half
B. Four times
C. Double
D. None time
A simple pendulum suspended from the ceiling of a lift has time period T when the lift is at rest. When the lift falls freely, the time period is_________________?
A. Infinite
B. Zero
C. T/g
D. g/T
The energy of SHM is maximum at_______________?
A. Extreme position
B. Mean position
C. In between mean and extreme
D. All positions during SHM
The product of the frequency and time period is equal to_________________?
A. 1
B. 3
C. 2
D. 4
The length of the second pendulum is_________________?
A. 99 cm
B. 100 cm
C. 99.2 cm
D. 98 cm
The displacement of SHM is written as X = X`sinθt if the displacement is written by X = Xθ sont then phase constant will be equal to_______________?
A. 45°
B. 0°
C. 90°
D. 180°
For what displacement the P.E becomes 1/4 of its maximum value ?
A. x = x’/4
B. x = x’/2
C. x = x’
D. x = x(2)’/2
Which one does not work according to resonance ?
A. Radio
B. T.V
C. Microwave oven
D. Bulb
The restoring force acting on the simple pendulum is given by_______________?
A. mg cos θ
B. mg sin θ
C. mg sin θ
D. mg cos θ
The phase of SHM describes________________?
A. The direction of motion only
B. Displacement only
C. Both displacement and direction of motion
D. Neither displacement nor direction of motion
The sharpness of resonance is__________________?
A. Equal to the square of damping force
B. Inversely proportional to the damping force
C. Directly proportional to the damping force
D. Equal to the square of damping force
The natural frequency of simple pendulum depends upon_______________?
A. It’s length
B. It’s mass
C. Square of its length
D. The square root of its length
Electrical resonance is observed in_______________?
A. Radio
B. Both in radio and microwave oven
C. Microwave oven
D. Neither in radio nor in a microwave oven
Total distance travelled by a bob of the simple pendulum in one vibration is equal to________________?
A. Square of the amplitude
B. Amplitude
C. 2 x amplitude
D. 4 x amplitude
When K.E energy of SHM is maximum its__________________?
A. Acceleration is zero
B. P.E is zero
C. Restoring force is zero
D. All P.E acceleration and restoring force are zero
In damped harmonic oscillation which one decreases ?
A. Energy of vibration
B. Amplitude of vibration
C. Both amplitude and energy
D. Neither amplitude nor energy
Forced vibration is known as_____________________?
A. Natural vibration
B. Simple harmonic vibration
C. Driven harmonic vibration
D. Free vibration
The mass attached to a spring executes ?
A. Rotatory motion
B. Vibratory motion
C. S.H.M
D. Both A and C
At Murree Hills (Assume the value of g changes). If we use a simple pendulum as time standard then one-second duration will_____________?
A. Increase
B. Remains the same
C. Decrease
D. Is zero
The velocity of the mass attached to a spring is maximum at_______________?
A. Mean position
B. Both A and C
C. Extreme position
D. None
The projection of the particle moving in a circle with non-uniform speed executes ?
A. Vibratory motion
B. S.H.M
C. Both B and D
D. None S.H.M
Displacement of the body in S.H.M is equal to amplitude when the body is at_______________?
A. Elsewhere
B. Mean position
C. Extreme position
D. None
For a simple pendulu,m the restoring force is caused by________________?
A. Gravity
B. Hand
C. Spring
D. All of these
The distance covered by a body in one complete vibration is 20cm. What is the amplitude of body ___________________?
A. 15 cm
B. 5 cm
C. 10 cm
D. 7.5 cm
A cup of milk is placed in a microwave oven. Tell which statements is false. (1) Milk will be heated up only. (2) Cup will remain cool. (3) Both cup and mild will get hot ?
A. None
B. 2
C. 1
D. 3
In case of a simple pendulum, the cause of damping is__________________?
A. Drag force of air
B. Tension in the string
C. Gravity
D. None of these
The energy absorbed by a body is __________________ at resonance?
A. Minimum only
B. Maximum as well minimum
C. Maximum only
D. 0
The relativistic energy E is equivalent to relativistic mass given by_______________?
A. E/c
B. E/c2
C. Ec2
D. c2/E
Which one of the following radiations has the strongest photon?
A. Microwaves
B. T.V waves
C. X-rays
D. γ-rays
0.001 kg mass will be equivalent to_________________?
A. 0.26 GWh
B. 25.00 GWh
C. 2.50 GWh
D. 250 GWh
Mark the wrong statement ?
A. an un-accelerated frame of reference is called an inertial frame of reference
B. a frame of reference which is either at rest or moves with a constant velocity is called an inertial frame of reference
C. all the frames of reference in uniform rectilinear motion are equivalent
D. Newtons laws of motion are valid in an accelerated (non inertial) frame of reference
An observer shoots parallel to a meter stick at very high (relativistic) speed and finds that the length of meter stick is________________?
A. one meter
B. less than one meter
C. greater than one meter
D. a foolish question
Linear momentum of a photon is_______________?
A. zero
B. hv/c
C. hv/c2
D. c2/hv
The linear momentum of an X-ray photon of wavelength 0.1A is_______________?
A. 6.625x1023N-s
B. 662.5x1023N-s
C. 66.25x1023N-s
D. data is insufficient
Stopping potential for a metal surface in case of photoelectric emission depends on_____________?
A. the intensity of incident light
B. the threshold frequency for the metal surface
C. the frequency of incident light and work function of the metal surface
D. all of the above
The existence of Ether wind was experimentally rejected by__________________?
A. double of its rest mass
B. equal to its rest mass
C. infinite
D. zero
Select an alternative from of uncertainly principle from the following_______________?
A. mc2 = hv
B. ∆E . ∆t = h
C. ∆E = h/m∆c(1-cosθ)
D. Any of above
If a material object moves with speed of light its mass becomes ________________?
A. double of its rest mass
B. equal to its rest mass
C. infinite
D. zero
Rest mass of a photon is________________?
A. very small
B. zero
C. infinite
D. 1.67 x 10-27 kg
Einstein’s photoelectric equation is given by_______________?
A. 1/2 mvmax2-hf = Φ
B. 1/2 mvmax2=hf+Φ
C. 1/2 mvmax2=hf-Φ
D. All of above are correct
As the temperature of black body is raised the wavelength corresponding to maximum intensity________________?
A. remain the same
B. shifts towards shorter wavelength
C. shifts towards longer wavelength
D. shifts towards longer as well as shorter wavelengths
The name of the photon for quantum of light was proposed by________________?
A. Plank
B. Ampere
C. Thomson
D. Einstein
In Compton scattering, the change in wavelength is maxed if_______________?
A. The angle of scattering is 60°
B. The angle of scattering is 90°
C. The angle of scattering is 180°
D. The angle of scattering is 0
Davison Germer experiment indicates__________________?
A. Polarization
B. Interference
C. Electron diffraction
D. Refraction
A photon is________________?
A. A positively charged particle
B. A unit of energy
C. A quantum of electromagnetic radiation
D. A unit of wavelength
Which one of the following has the largest energy content ?
A. 103 photons of wavelength 2 pm (γ-rays)
B. 106 photons of wavelength 50?m (infrared)
C. 102 photons of wavelength 1nm (x-rays)
D. 106 photons of wavelength 200nm (UV)
A transmitting station emits radio waves of wavelength λ at power P. If h is Planck’s constant & c the speed of light what is the rate of emission of photons ?
A. Speed of sound
B. λ
C. Speed of lightB.
D. h
After traveling through a vacuum a photon of light entering into some transparent denser medium. Thus the energy of light______________?
A. Decreases because speed decreases
B. Increases because wavelength decreases
C. Remains same
D. Increases then decrease