Physics MCQ (Multiple Choice Questions) - SchoolingAxis

Physics MCQ (Multiple Choice Questions)

 Que- Venturi meter is used to measure  

a. fluid pressure 

b. fluid density 

c. fluid speed 

d. none 

Answer- fluid speed

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

a. shinning side of the ball 

b. rough side 

c. seam of the ball  

d. goes straight 

Answer- 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- Instrument used to measure blood pressure is called  

a. venturimeter 

b. blood pressure 

c. sphgmomanometer 

d. sonometer 

Answer- sphgmomanometer

Que- A chimney works works best if air exposed to the chimmey 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 fluid in a horizontal pipe is known as  

a. Bernoullirt 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- Laminar flow usually occurs at speeds. 

a. low 

b. high 

c. very high 

d. some time high and some time low 

Answer- low

Que- For _________ flow the path of the fluid particles cannot be tracked. 

a. laminar 

b. stream line 

c. turbulent 

d. both (a) and (b) 

Answer- turbulent

Que- Sphygmomanometers measures blood pressure. 

a. statically 

b. dynamically 

c. some time static and some time dynamic 

d. none of these 

Answer- dynamically

Que- Carburetor of a car is a 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 disystolic 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- Bernoullis 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 venturimeter at  

a. convergent duct 

b. divergent duct 

c. throat 

d. none of these 

Answer- throat

Que- The normal blood pressure range for an human body is  

a. 120 to 80 torr 

b. 100 to 80 torr 

c. 120 to 60 torr 

d. 60 to 140 torr 

Answer- 60 to 140 torr

Que- In vibratory motion 

a. P.E. remains constant 

b. K.E. remain constant 

c. total energy remain constant 

d. total momentum remain constant 

Answer- total energy remain 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 mean and extreme position on the right side 

d. middle between 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- Total energy of a body executing S.H.M is directly proportional to 

a. square root of amplitude  

b. the amplitude 

c. reciprocal of amplitude 

d. square of amplitude 

Answer- square of 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 second pendulum is 

a. 100 cm 

b. 99 cm 

c. 99.2 cm 

d. 98 cm 

Answer- 99.2 cm

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

a. four times 

b. six times 

c. eight times 

d. two times 

Answer- two times

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 become double its energy become 

a. double 

b. four times 

c. one half 

d. none time 

Answer- four times

Que- A simple pendulum suspended form 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 frequency and time period is equal to 

a. 1 

b. 2 

c. 3 

d. 4 

Answer- 1

Que- Sharpness of resonance is 

a. directly proportional to damping force 

b. inversely proportional to damping force 

c. equal to square of damping force 

d. equal to square of damping force  

Answer- inversely proportional to damping force

Que- Which one dows not work according to resonance? 

a. T.V 

b. radio 

c. microwave oven 

d. bulb 

Answer- bulb

Que- Phase of SHM describes 

a. displacement only 

b. 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- Natural frequency of simple pendulum depends upon 

a. its mass 

b. its length 

c. square of its length 

d. square root of its length 

Answer- 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 microwave oven 

Answer- radio

Que- Total distance traveled by bob of simple pendulum in one vibration is equal to 

a. amplitude 

b. square of 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 are known as 

a. simple harmonic vibration 

b. natural vibration 

c. driven harmonic vibration 

d. free vibration 

Answer- driven harmonic vibration

Que- 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 value of g changes). If we use a simple pendulum as time standard then one second duration will. 

a. increase 

b. decrease 

c. remains 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 body is at  

a. mean position 

b. else where 

c. extreme position 

d. none 

Answer- extreme position

Que- For a simple pendulum 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. both 

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 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. zero 

Answer- maximum only

Que- Waves transmit __________________ from one place to another 

a. energy 

b. mass 

c. both 

d. none 

Answer- energy

Que- The waves that require a material medium for their propagation are called  

a. matter waves 

b. electromagnetic waves 

c. carrier waves 

d. mechanical waves 

Answer- mechanical waves

Que- The distance between any two consecutive crests or troughs is called  

a. frequency 

b. period 

c. wave length 

d. phase difference 

Answer- wave length

Que- When two identical traveling waves are superimposed, the velocity of the resultant wave  

a. decreases 

b. increases 

c. remains unchanged 

d. becomes zero 

Answer- remains unchanged

Que- In vibrating cord the points where the amplitude is maximum, are called  

a. antinodes 

b. nodes 

c. troughs 

d. crests 

Answer- antinodes

Que- If stretching force T of wire increases, then its frequency  

a. decreases 

b. increases 

c. remains the same 

d. any of above 

Answer- increases

Que- A stationary wave is set up in the air column of a closed pipe. At the closes end of the pipe 

a. always an node in formed 

b. always an antinode is formed 

c. neither node nor antinode is formed 

d. sometimes a node and sometimes an antinode is formed 

Answer- always an node in formed

Que- It is possible to distinguish between transverse and longitudinal waves form the property of  

a. refraction 

b. polarization 

c. interference 

d. diffraction 

Answer- polarization

Que- According to Newton sound travel in air under the conditions of  

a. adiabatic 

b. isothermal 

c. isobaric 

d. isochoric 

Answer- isobaric

Que- Sound waves do not travel in vacuum because  

a. they are transverse waves 

b. they are stationary waves 

c. they require material medium for propagation 

d. they do not have enough energy 

Answer- they require material medium for propagation

Que- Velocity of sound in vacuum is  

a. 332 ms-1 

b. 320 ms-1 

c. Zero 

d. 224 ms-1 

Answer- Zero

Que- Increase in velocity of sound in the air for 1 ?C rise in temperature is  

a. 1.61 ms-1 

b. 61.0 ms-1 

c. 0.61 ms-1 

d. 2.00 ms-1 

Answer- 0.61 ms-1

Que- The velocity of sound is greatest in  

a. Water  

b. air 

c. copper 

d. ammonia 

Answer- copper

Que- On loading the prong of a tuning form with wax its frequency  

a. increases 

b. decreases 

c. remains unchanged 

d. may increase or decrease 

Answer- decreases

Que- The normal ear is the most sensitive in the frequency range  

a. 20000 to 30000 hertz 

b. 10 to 20 hertz 

c. 2000 to 4000 hertz 

d. 6000 to 8000 hertz 

Answer- 2000 to 4000 hertz

Que- Ultrasonic have  

a. frequency in the audible range 

b. frequency is greater than 20 kHz 

c. frequency lower than 20 Hz 

d. all of above 

Answer- frequency is greater than 20 kHz

Que- The periodic alternation of sound between maximum and minimum loudness are called  

a. silence zone 

b. interference 

c. beats 

d. resonance 

Answer- beats

Que- The number of beats produced per second is equal to  

a. the sum of the frequencies of two tuning forks 

b. the difference of the frequencies of two tuning forks 

c. the ratio of the frequencies of two tuning forks 

d. the frequency of either of the two tuning forks 

Answer- the difference of the frequencies of two tuning forks

Que- Beats are the results of  

a. diffraction of sound waves 

b. constructive and destructive interference 

c. polarization 

d. destructive interference 

Answer- constructive and destructive interference

Que- Silence zone takes place due to  

a. constructive interference 

b. destructive interference 

c. beats 

d. resonance 

Answer- destructive interference

Que- Doppler effect applies to  

a. sound wave only 

b. light wave only 

c. both sound and light waves 

d. neither sound nor light wave 

Answer- both sound and light waves

Que- When the source of sound moves away form a stationary listener then _________ occurs. 

a. an apparent increase in frequency 

b. an apparent decrease in frequency 

c. an apparent decrease in wavelength 

d. no apparent change in frequency 

Answer- an apparent decrease in frequency

Que- A simple pendulum has a bob of mass m and its frequency is f. If we replaced the bob with a heavier one say of 2m then that will be its new frequency? 

a. 1/4f 

b. 1/2f 

c. frequency lower than 20 Hz 

d. 2f 

Answer- frequency lower than 20 Hz

Que- Which one is the correct relation for fundamental frequency of open and closed pipe? 

a. fopen = 2 fclosed 

b. fclosed = 2fopen 

c. fopen = fclosed 

d. fopen = 1 / f closed 

Answer- fopen = 2 fclosed

Que- In open organ pipe  

a. only even harmonics are present 

b. only odd harmonics are present 

c. both even and odd harmonics are present 

d. selected harmonics are present 

Answer- both even and odd harmonics are present

Que- Waves produced at the surface of water by a pencil executing vibrating motion if held vertically at a frequency of 50Hz are 

a. Longitudinal 

b. Transverse 

c. Periodic 

d. both (a) and (c)  

Answer- both (a) and (c) 

Que- Newton estimated the speed of sound 

a. 281m/sec 

b. 333m/sec 

c. 340m/sec 

d. all of the above 

Answer- 281m/sec

Que- Laplace found that the alternate compressions and rarefactions produced in sound waves follows  

a. isothermal law 

b. adiabatic law 

c. isochoric law 

d. all of the above 

Answer- adiabatic law

Que- The speed of sound in hydrogen is __________ time than that in oxygen  

a. Two times 

b. Three times 

c. Four time 

d. Six time 

Answer- Four time

Que- The beats frequency (sensible) for a human car is  

a. 42Hz 

b. 7 Hz 

c. 256Hz 

d. 262Hz 

Answer- 7 Hz

Que- The speed of stationary waves in a stretched string are independent of  

a. Number of loops 

b. Tension in the string 

c. Point where string is plucked 

d. both (a) and (c)  

Answer- both (a) and (c) 

Que- Fundamental frequency of stationary waves in open pipe is ________ times the frequency in closed pipe. 

a. One 

b. Two 

c. Four time 

d. None of these 

Answer- Two

Que- Which phenomena can be applied to estimate the velocity of star with respect to earth 

a. Dopplers effect 

b. Interference of waves 

c. Beats phenomena 

d. All of these 

Answer- Dopplers effect

Que- Optical active crystals rotates the  

a. vibrating plane  

b. polarization plane 

c. diffraction plane 

d. interference plane 

Answer- polarization plane

Que- Which is not optically active? 

a. sugar 

b. tartaric acid 

c. water 

d. sodium chlorate 

Answer- water

Que- In double slit experiment we observe  

a. interference fringes only 

b. diffraction fringes only 

c. both interference and diffraction fringes 

d. polirized frringes 

Answer- both interference and diffraction fringes

Que- When light incident normally on thin film the path difference depends upon  

a. thickness of the film only 

b. nature of the film only 

c. angle of indidence only 

d. all thickness nature and angle of incidence 

Answer- all thickness nature and angle of incidence

Que- Which one of the following properties of light does not change with the nature of the medium? 

a. velocity 

b. wavelength 

c. amplitude 

d. frequency 

Answer- frequency

Que- Light reaches the earth form sun in nearly  

a. 15 minutes 

b. 10 minutes 

c. 8 minutes 

d. 8 minutes 30 seconds 

Answer- 8 minutes 30 seconds

Que- Photoelectric effect was given by  

a. Hertz 

b. Fresnel 

c. Einstein 

d. Plank 

Answer- Einstein

Que- According to Einstein light travels form one place to another in the form of  

a. waves  

b. particles 

c. photons 

d. it was not his discovery 

Answer- photons

Que- Longitudinal waves do not exhibit  

a. reflection 

b. refraction 

c. diffraction 

d. polarization 

Answer- polarization

Que- Central spot of Newtons rings  

a. bright 

b. dark for large wavelength 

c. dark 

d. bright for large wavelength 

Answer- bright

Que- A point source of light placed in a homogeneous medium gives rise to  

a. a cylindrical wave front 

b. an elliptical wave front 

c. a spherical wave front 

d. a plane wave front 

Answer- a spherical wave front

Que- The locus of all points in a medium having the same phase of vibration is called  

a. crest 

b. trough 

c. wavelength 

d. wave front 

Answer- wave front

Que- Which one of the following is nearly monochromatic light ? 

a. light form fluorescent tube 

b. light form neon lamp 

c. light form sodium lamp 

d. light form simple lamp 

Answer- light form sodium lamp

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