Physics MCQ (Multiple Choice Questions) - SchoolingAxis

Physics MCQ (Multiple Choice Questions)

 Que- A satellite moving around the earth constitutes______________?  

a. An inertial frame of reference  

b. Non-inertial frame  

c. Neither inertial nor non-inertial  

d. Both inertial and non-inertial 

Answer- Non-inertial frame

Que- Minimum number of communication satellites required to cover the whole earth is______________?  

a. 4  

b. 3  

c. 2  

d. 5 

Answer- 3

Que- A body of 2 kg is suspended from the ceiling of an elevator moving up with an acceleration g. Its apparent weight in the elevator will be______________?  

a. 9.8 N  

b. 19.6 N  

c. 129.4 N  

d. 39.2 N 

Answer- 39.2 N

Que- If a body of mass 10 kg is allowed to fall freely, its weight becomes______________?  

a. 0  

b. 89N  

c. 9.8 N  

d. 10N 

Answer- 0

Que- How many days would be in a year if the distance between the earth and the sun were reduced to half of its present value (assuming circular orbit) ?  

a. 365 days  

b. 730 days  

c. 329 days  

d. 129 days 

Answer- 129 days

Que- When a body is moving along a circular path it covers a certain angle in a given interval of time. Such type of motion is__________________?  

a. Vibratory motion  

b. Linear motion  

c. Rotatory motion  

d. Angular motion 

Answer- Angular motion

Que- Coefficient of viscosity of honey is greater than______________?  

a. Milk  

b. Water  

c. Charcoal  

d. Water 

Answer- Water

Que- The dimensions of the coefficient of viscosity are_____________?  

a. ML-1T-1  

b. M2L1T1  

c. ML1T-1  

d. M2L-1T-1 

Answer- ML-1T-1

Que- Terminal velocity is_____________?  

a. Uniform  

b. Maximum  

c. Uniform and maximum  

d. Neither uniform nor maximum 

Answer- Uniform and maximum

Que- When the body moves with terminal velocity the acceleration in the body become_____________?  

a. 0  

b. Maximum  

c. Variable  

d. Infinite 

Answer- 0

Que- Terminal velocity is given by equation_______________?  

a. Vt = gr2ρ  

b. Vt = 2gr2/9ρ  

c. Vt = gr2/9ρ  

d. Vt = 9gr2/2ρ 

Answer- Vt = 2gr2/9ρ

Que- Terminal velocity of the body is directly proportional to the_______________?  

a. The radius of the body  

b. The diameter of the body  

c. Size of the body  

d. Square of the diameter of the body 

Answer- Square of the diameter of the body

Que- The flow of ideal fluid is always_______________?  

a. Turbulent  

b. Streamline  

c. Irregular  

d. Straight line 

Answer- Streamline

Que- The drag force is given by_________________?  

a. Newtons law  

b. Pascals law  

c. Gauss law  

d. Stokes law 

Answer- Stokes law

Que- When fluid is incompressible then________________?  

a. The velocity of the fluid is constant  

b. The flow of the fluid is the straight line  

c. The density of the fluid is constant  

d. The volume of the fluid is constant 

Answer- The density of the fluid is constant

Que- Irregular flow of fluid is called_______________?  

a. Streamline  

b. Turbulent  

c. Uniform  

d. Laminar 

Answer- Turbulent

Que- According to equation of continuity A1V1 = A2V2 = constant. The constant is equal to_______________?  

a. Flow rate  

b. Volume of fluid  

c. Mass of fluid  

d. The density of the fluid 

Answer- Flow rate

Que- The equation of continuity is obtained by applying in the law of conservation of_____________?  

a. Mass  

b. Energy  

c. Momentum  

d. All 

Answer- Mass

Que- Velocity of fluid increases where the pressure is________________?  

a. Low  

b. High  

c. Constant  

d. Changes continuously 

Answer- Low

Que- Speed of efflux can be determined by applying______________?  

a. Bernoulli's theorem  

b. Torricelli's theorem  

c. Venture relation  

d. All 

Answer- Torricelli's theorem

Que- Blood vessels are______________?  

a. Rigid  

b. Not rigid  

c. Of glass  

d. Of rubber 

Answer- Not rigid

Que- Concentration of red cells in blood is about______________?  

a. 25%  

b. 40%  

c. 50%  

d. 75% 

Answer- 50%

Que- A man standing near a fast moving train may fall___________?  

a. On the train  

b. Away from the train  

c. Towards the train  

d. On himself 

Answer- Towards the train

Que- For which position maximum blood pressure in the body have the smallest value ?  

a. Standing straight  

b. Sitting on chair  

c. Sitting on ground  

d. Laying horizontally 

Answer- Laying horizontally

Que- Two fog droplets have radius 2:3 their terminal velocities are_______________?  

a. 4:06  

b. 4:09  

c. 2:09  

d. 4.3 

Answer- 4:09

Que- Bernoulli's equation is obtained by applying the law of conservation of ________________?  

a. Mass  

b. Energy  

c. Momentum  

d. Fluid 

Answer- Energy

Que- Venturi meter is used to measure_________________?  

a. Fluid pressure  

b. Fluid density  

c. Fluid speed  

d. None 

Answer- Fluid pressure

Que- In cricket when a bowler produce reverse swing the ball will move towards______________?  

a. The shinning side of the ball  

b. Rough side  

c. The seam of the ball  

d. Goes straight 

Answer- The shinning side of the ball

Que- Stokes law is applicable if body has __________shape?  

a. Rough  

b. Square  

c. Circular  

d. Spherical 

Answer- Spherical

Que- One torr is equal to_________________?  

a. 1.333 Nm-2  

b. .1333 Nm-2  

c. 13.33 Nm-2  

d. 133.3 Nm2 

Answer- 133.3 Nm2

Que- Systolic pressure is called_______________?  

a. Low blood pressure  

b. High blood pressure  

c. Normal blood pressure  

d. Abnormal blood pressure 

Answer- High blood pressure

Que- The instrument used to measure blood pressure is called____________?  

a. Venturimeter  

b. Blood pressure  

c. Sphygmomanometer  

d. Sonometer 

Answer- Sphygmomanometer

Que- A chimney works best if air exposed to the chimney is______________?  

a. Stationary  

b. Moving  

c. Moving slowly  

d. Moving fast 

Answer- Moving fast

Que- The effect of the decrease in pressure with the increase of the speed of the fluid in a horizontal pipe is known as______________?  

a. Bernoulli effect  

b. Torricelli effect  

c. Venturi effect  

d. Stokes effect 

Answer- Venturi effect

Que- Ideal fluid is_______________?  

a. Non-viscous  

b. Incompressible  

c. Steady flow  

d. Possess all properties 

Answer- Possess all properties

Que- Which one is venturi relation ?  

a. P1 – P2 = 1/2 ρV22  

b. V2 = 2g (h1-h2)  

c. P = 1 /2ρV2 = ρgh = constant  

d. A1 V1 = A2 V2 = constant 

Answer- P1 – P2 = 1/2 ρV22

Que- Laminar flow usually occurs at speeds_____________?  

a. Low  

b. High  

c. Very high  

d. Some time high and some time low 

Answer- Low

Que- Sphygmomanometers measures blood pressure ?  

a. Statically  

b. Dynamically  

c. Some time static and sometimes dynamic  

d. None of these 

Answer- Dynamically

Que- The carburettor of a car is an application of_______________?  

a. Venturi meter  

b. Bernoulli equation  

c. Both A and B  

d. None 

Answer- Both A and B

Que- The blood flow is _______________ flow at systolic pressure?  

a. Laminar  

b. Turbulent  

c. Mixed  

d. None 

Answer- Laminar

Que- The profile of aeroplane wing which lifts it up is called as_____________?  

a. Wing shape  

b. Aerofoil profile  

c. Curved profile  

d. None of these 

Answer- Aerofoil profile

Que- Bernoulli's equation is applicable for_________________?  

a. Laminar flow  

b. Turbulent flow  

c. Both laminar and turbulent flow  

d. None of these 

Answer- Both laminar and turbulent flow

Que- The density of human blood is nearly equal to____________?  

a. Water  

b. Honey  

c. Mercury  

d. Oil (kerosene) 

Answer- Water

Que- The speed of the fluid is maximum in the venturi meter at_______________?  

a. Convergent duct  

b. Divergent duct  

c. Throat  

d. None of these 

Answer- None of these

Que- The normal blood pressure range for a human body is______________?  

a. 120 to 80 torr  

b. 100 to 80 torr  

c. 120 to 60 torr  

d. 60 to 140 torr 

Answer- 120 to 60 torr

Que- For ___________ flow the path of the fluid particles cannot be tracked?  

a. Laminar  

b. Streamline  

c. Turbulent  

d. Both A and B 

Answer- Turbulent

Que- In vibratory motion_________________?  

a. P.E. remains constant  

b. K.E. remain constant  

c. total energy remains constant  

d. total momentum remains constant 

Answer- total energy remains constant

Que- The waveform of S.H.M. is________________?  

a. Standing wave  

b. Sine wave  

c. Square wave  

d. None 

Answer- Sine wave

Que- S.I unit of frequency is_________________?  

a. Vibration S-2  

b. Radian  

c. Hertz  

d. ms-1 

Answer- Hertz

Que- In S.H.M. the velocity of a particle is maximum at________________?  

a. mean position  

b. extreme position  

c. middle between the mean and extreme position on the right side  

d. middle between the mean and extreme position on the left side 

Answer- mean position

Que- The acceleration of a projection on the diameter for a particle moving along a circle is_______________?  

a. w2x  

b. wx2  

c. w2x  

d. wx2 

Answer- w2x

Que- The total energy of a body executing S.H.M is directly proportional to________________?  

a. The square root of amplitude  

b. The amplitude  

c. Reciprocal of amplitude  

d. Square of an amplitude 

Answer- Square of an amplitude

Que- The time period of a second pendulum is______________?  

a. 4 seconds  

b. 3 seconds  

c. 2 seconds  

d. 6 seconds 

Answer- 2 seconds

Que- The length of the second pendulum is________________?  

a. 100 cm  

b. 99 cm  

c. 99.2 cm  

d. 98 cm 

Answer- 99.2 cm

Que- If the length of the second pendulum becomes four times, then its time period will become________________?  

a. 4 times  

b. 6 times  

c. 8 times  

d. 2 times 

Answer- 2 times

Que- The force responsible for the vibratory motion of the simple pendulum is_________________?  

a. mg cosθ  

b. mg sinθ  

c. mg tonθ  

d. mg 

Answer- mg sinθ

Que- The frequency of the second pendulum is________________?  

a. 1 hertz  

b. 0.5 hertz  

c. 1.5 hertz  

d. 2.5 hertz 

Answer- 0.5 hertz

Que- Simple harmonic motion is a type of________________?  

a. Rotational motion  

b. Circular motion  

c. Musical arrangement  

d. Vibratory motion 

Answer- Vibratory motion

Que- The SI unit of force constant is identical with that of__________________?  

a. Force  

b. Pressure  

c. Surface tension  

d. Loudness 

Answer- Surface tension

Que- When the amplitude of a wave becomes double its energy become_________________?  

a. Double  

b. Four times  

c. One half  

d. None time 

Answer- Four times

Que- 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. T/g  

c. Zero  

d. g/T 

Answer- Infinite

Que- The energy of SHM is maximum at_______________?  

a. Mean position  

b. Extreme position  

c. In between mean and extreme  

d. All positions during SHM 

Answer- All positions during SHM

Que- The product of the frequency and time period is equal to_________________?  

a. 1  

b. 2  

c. 3  

d. 4 

Answer- 1

Que- The length of the second pendulum is_________________?  

a. 100 cm  

b. 99 cm  

c. 99.2 cm  

d. 98 cm 

Answer- 99.2 cm

Que- 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. 0°  

b. 45°  

c. 90°  

d. 180° 

Answer- 90°

Que- For what displacement the P.E becomes 1/4 of its maximum value ?  

a. x = x'  

b. x = x'/2  

c. x = x'/4  

d. x = x(2)'/2 

Answer- x = x'/2

Que- Which one does not work according to resonance ?  

a. T.V  

b. Radio  

c. Microwave oven  

d. Bulb 

Answer- Bulb

Que- The restoring force acting on the simple pendulum is given by_______________?  

a. mg sin θ  

b. mg sin θ  

c. mg cos θ  

d. mg cos θ 

Answer- mg sin θ

Que- The phase of SHM describes________________?  

a. Displacement only  

b. The direction of motion only  

c. Both displacement and direction of motion  

d. Neither displacement nor direction of motion 

Answer- Both displacement and direction of motion

Que- The sharpness of resonance is__________________?  

a. Directly proportional to the damping force  

b. Inversely proportional to the damping force  

c. Equal to the square of damping force  

d. Equal to the square of damping force 

Answer- Inversely proportional to the damping force

Que- The natural frequency of simple pendulum depends upon_______________?  

a. It's mass  

b. It's length  

c. Square of its length  

d. The square root of its length 

Answer- The square root of its length

Que- Electrical resonance is observed in_______________?  

a. Radio  

b. Microwave oven  

c. Both in radio and microwave oven  

d. Neither in radio nor in a microwave oven 

Answer- Radio

Que- Total distance travelled by a bob of the simple pendulum in one vibration is equal to________________?  

a. Amplitude  

b. Square of the amplitude  

c. 2 x amplitude  

d. 4 x amplitude 

Answer- 4 x amplitude

Que- When K.E energy of SHM is maximum its__________________?  

a. P.E is zero  

b. Acceleration is zero  

c. Restoring force is zero  

d. All P.E acceleration and restoring force are zero 

Answer- All P.E acceleration and restoring force are zero

Que- In damped harmonic oscillation which one decreases ?  

a. Amplitude of vibration  

b. Energy of vibration  

c. Both amplitude and energy  

d. Neither amplitude nor energy 

Answer- Both amplitude and energy

Que- Forced vibration is known as_____________________?  

a. Simple harmonic vibration  

b. Natural vibration  

c. Driven harmonic vibration  

d. Free vibration 

Answer- Driven harmonic vibration

Que- The mass attached to a spring executes ?  

a. Vibratory motion  

b. Rotatory motion  

c. S.H.M  

d. Both A and C 

Answer- Both A and C

Que- 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. Decrease  

c. Remains the same  

d. Is zero 

Answer- Increase

Que- The velocity of the mass attached to a spring is maximum at_______________?  

a. Mean position  

b. Extreme position  

c. Both A and B  

d. None 

Answer- Mean position

Que- The projection of the particle moving in a circle with non-uniform speed executes ?  

a. S.H.M  

b. Vibratory motion  

c. Both B and D  

d. None S.H.M 

Answer- Both B and D

Que- Displacement of the body in S.H.M is equal to amplitude when the body is at_______________?  

a. Mean position  

b. Elsewhere  

c. Extreme position  

d. None 

Answer- Extreme position

Que- For a simple pendulu,m the restoring force is caused by________________?  

a. Gravity  

b. Spring  

c. Hand  

d. All of these 

Answer- Gravity

Que- The distance covered by a body in one complete vibration is 20cm. What is the amplitude of body ___________________?  

a. 10 cm  

b. 5 cm  

c. 15 cm  

d. 7.5 cm 

Answer- 5 cm

Que- 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. 1  

c. 2  

d. 3 

Answer- 3

Que- In case of a simple pendulum, the cause of damping is__________________?  

a. Drag force of air  

b. Gravity  

c. Tension in the string  

d. None of these 

Answer- Drag force of air

Que- The energy absorbed by a body is __________________ at resonance?  

a. Maximum as well minimum  

b. Minimum only  

c. Maximum only  

d. 0 

Answer- Maximum only

Que- The relativistic energy E is equivalent to relativistic mass given by_______________?  

a. Ec2  

b. E/c2  

c. E/c  

d. c2/E 

Answer- E/c2

Que- Which one of the following radiations has the strongest photon?  

a. T.V waves  

b. Microwaves  

c. X-rays  

d. γ-rays 

Answer- γ-rays

Que- 0.001 kg mass will be equivalent to_________________?  

a. 2.50 GWh  

b. 25.00 GWh  

c. 0.26 GWh  

d. 250 GWh 

Answer- 25.00 GWh

Que- Mark the wrong statement ?  

a. a frame of reference which is either at rest or moves with a constant velocity is called an inertial frame of reference  

b. an un-accelerated frame of reference 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 

Answer- Newtons laws of motion are valid in an accelerated (non inertial) frame of reference

Que- An observer shoots parallel to a meter stick at very high (relativistic) speed and finds that the length of meter stick is________________?  

a. greater than one meter  

b. less than one meter  

c. one meter  

d. a foolish question 

Answer- less than one meter

Que- Linear momentum of a photon is_______________?  

a. zero  

b. hv/c2  

c. hv/c  

d. c2/hv 

Answer- zero

Que- The linear momentum of an X-ray photon of wavelength 0.1A is_______________?  

a. 6.625x1023N-s  

b. 66.25x1023N-s  

c. 662.5x1023N-s  

d. data is insufficient 

Answer- 6.625x1023N-s

Que- Stopping potential for a metal surface in case of photoelectric emission depends on_____________?  

a. the threshold frequency for the metal surface  

b. the intensity of incident light  

c. the frequency of incident light and work function of the metal surface  

d. all of the above 

Answer- the frequency of incident light and work function of the metal surface

Que- The existence of Ether wind was experimentally rejected by__________________?  

a. equal to its rest mass  

b. double of its rest mass  

c. infinite  

d. zero 

Answer- infinite

Que- Select an alternative from of uncertainly principle from the following_______________?  

a. ∆E = h/m∆c(1-cosθ)  

b. ∆E . ∆t = h  

c. mc2 = hv  

d. Any of above 

Answer- ∆E . ∆t = h

Que- If a material object moves with speed of light its mass becomes ________________?  

a. equal to its rest mass  

b. double of its rest mass  

c. infinite  

d. zero 

Answer- infinite

Que- Rest mass of a photon is________________?  

a. infinite  

b. zero  

c. very small  

d. 1.67 x 10-27 kg 

Answer- zero

Que- 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 

Answer- 1/2 mvmax2=hf-Φ

Que- As the temperature of black body is raised the wavelength corresponding to maximum intensity________________?  

a. shifts towards longer wavelength  

b. shifts towards shorter wavelength  

c. remain the same  

d. shifts towards longer as well as shorter wavelengths 

Answer- shifts towards shorter wavelength

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