Free Physics MCQs Mock Test Online with Answers

Q1 : Why the needle of iron swims on water surface when it is kept gently ?

A: It will remain under the water, when it will displace more water than its weight B: the density of needle is less than that of water C: due to surface tension D: due to its shape

Q2 : The SI unit of force constant is identical with that of__________________?

A: Force B: Pressure C: Surface tension D: Loudness

Q3 : In normal state of energy the incident high energy photons will be______________?

A: Stimulated B: Absorbed C: Cause X-ray emission D: Cause laser production

Q4 : For a simple pendulu,m the restoring force is caused by________________?

A: Gravity B: Spring C: Hand D: All of these

Q5 : In hydrogen spectrum which one of the following series lies in the ultraviolet region ?

A: Balmer series B: Pfund series C: Bracket series D: Lymann series

Q6 : Standard condition STP refer to a gas at ___________________?

A: 76cm 0°C B: 760mm 273K C: 1atm 273K D: all of the above

Q7 : According to Pascals law the pressure of gas in a vessel is_____________?

A: Different in different direction B: Same in all direction C: Same only along opposite directions D: Same only along normal directions

Q8 : Simple harmonic motion is a type of________________?

A: Rotational motion B: Circular motion C: Musical arrangement D: Vibratory motion

Q9 : Which of the following is path funtion?

A: Internal energy B: work and heat C: Enthalpy D: Entropy

Q10 : A convex lens of focal length f1 and a concave lens of focal length f2 are placed in contact. The focal length of the combination is_____________?

A: f2 + f1 B: f2 – f1 C: f1f2/f2+f1 D: f1f2/f1-f2

Q11 : The velocity of an oscillating charge as it moves to and fro along a wire is always_____________?

A: constant B: zero C: changing D: infinite

Q12 : A person wears spectates with concave lenses. It means that normally (when not using glasses), the image of distant objects is focused in his eyes:

A: behind the retina B: in front of the retina C: on the retina D: on the blind spot

Q13 : Adiabatic process is also called______________?

A: Heat exchange process B: Heating process C: Isentropic process D: All of the above

Q14 : Which of the following is a good moderator?

A: Helium B: Cadmium C: Graphite D: Ordinary Water

Q15 : Who keeps blind snakes as their pets?

A: Woodcutters B: Eagles C: Parrots D: Owls

Q16 : Non-inverting amplifier circuits have____________?

A: A very high input impedance B: A very low input impedance C: A low output impedance D: None of the above

Q17 : Reflecting mirrors in laser is used to______________?

A: Further stimulation B: Lasing more C: For producing more energetic lasers D: All

Q18 : The value of R ( Universal Gas Constant ) = ___________?

A: 8.314 J/mole K B: 6.5 J/mole K C: 1.314 J/mole K D: 10.314 J/mole K

Q19 : 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

Q20 : The energy of SHM is maximum at_______________?

A: Mean position B: Extreme position C: In between mean and extreme D: All positions during SHM

Q21 : In Davisson-Germer experiment the diffracted proton from crystal shows______________?

A: Particle property B: Wave property C: Light property D: Quantum property

Q22 : Electron moves in the orbit as________________?

A: Simple vibratory motion B: Standing wave motion C: Vibratory motion like up and down D: S.H.M likes the sound

Q23 : If a diffraction grating is placed in the path of a light beam it reveals______________?

A: Wave property B: Particle property C: Energy particle D: Electromagnetic wave property

Q24 : 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

Q25 : The most suitable unit for expressing nuclear radius is_______?

A: Angstrom B: Micro C: Nano meter D: Fermi

Q26 : Reverse process of photoelectric effect is_______________?

A: pair production B: Compton effect C: annihilation of matter D: X-rays production

Q27 : What is the SI unit of acceleration is ___________?

A: Meter per secound B: meter per second square C: Both D: All

Q28 : 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: λ B: Speed of sound C: Speed of lightB. D: h

Q29 : The alternating voltage is an example of_______________?

A: A digital waveform B: An analogue waveform C: Discrete waveform D: None at all

Q30 : Force 100N is applied on a wire produces extension 5mm in it. Energy stored in it is

A: 0.125 J B: 0.250 J C: 0.50 J D: 1 J

Q31 : If a lift is going up with acceleration, the apparent weight of a body is:

A: More than the true weight B: More or less the true weight C: Less than the true weight D: Equal to the true weight

Q32 : The device used for conversion of D.C. to A.C. is called______________?

A: Converter B: A rectifier C: Inverter D: Oscillator

Q33 : Boyles law helds for ideal gases in________________?

A: isochoric processes B: isobaric processes C: isothermal processes D: adiabatic processes

Q34 : A photon is________________?

A: A unit of energy B: A positively charged particle C: A quantum of electromagnetic radiation D: A unit of wavelength

Q35 : Study of sound is called _____________?

A: Soundlogy B: Acoustics C: Neurology D: Physiology

Q36 : The antiparticle of electron is: ______?

A: Proton B: Meson C: Neutron D: Positron

Q37 : The anti-matter is composed of: __________________?

A: Anti-electrons B: Anti-proton C: Anti-neutron D: All of these

Q38 : Excited atoms return to their ground state in_______________?

A: 10-10s B: 10-8s C: 10-6s D: 10-9s

Q39 : Which of the following are not deflected by electric and magnetic fields ?

A: Alpha rays B: Beta rays C: Gamma rays D: None of these

Q40 : The frequency of ultrasound wave is typically?

A: Above 20 kHz B: Above 20,000 kHz C: Below 20 kHz D: Below 02 kHz

Q41 : The value of resistivity for insulator is of the order of____________?

A: 105 ohm metre B: 106 ohm metre C: 107 ohm metre D: 108 ohm metre

Q42 : The core of a transformer is laminated to reduce energy losses due to__________?

A: Eddy currents B: Hysteresis C: Resistance in winding D: None of these

Q43 : If a wire has a resistance of 0.5 ohm, then its conductance is:

A: 1 S B: 1.5 S C: 2 S D: 5 S

Q44 : The process in which no heat enters or leave the system known as _____________?

A: Isochoric B: Isobaric C: adiabatic D: Isothermal

Q45 : A lens which converges a beam of parallel rays to a point is called______________?

A: diverging (or concave) lens B: converging (or convex) lens C: plano concave lens D: plano convex lens

Q46 : The first overtone of a stretched string of given length is 320 Hz. The first harmonic is_________?

A: 320 Hz B: 640 Hz C: 160 Hz D: 480 Hz

Q47 : In forward bias the width of potential barrier_____________?

A: Increases B: Decreases C: Remains same D: No effect

Q48 : A stone is thrown upward from the top of a 59.4m high cliff with an upward velocity component of 19.6m/s how long is the stone in the air?

A: 4.00 s B: 5.00 s C: 6.00 s D: 7.00 s

Q49 : The system which can exchange matter as well as energy with its surroundings is called____________?

A: open system B: Closed system C: Isolated system D: Inert system

Q50 : The equation θ = 1.22 λ/D was devised by_______________?

A: Newton B: Einstein C: Raleigh D: Planks

Q51 : The optic nerve which is found in the human brain is also called ___________?

A: Second cranial nerve B: Mini nervous C: Carnival nerve D: Sustained nerve

Q52 : Gravitation force of sun is__________?

A: 274 m/s² B: 362 m/s² C: 300 m/s² D: None of these

Q53 : Relation between linear velocity and angular velocity:

A: v=rw B: r=vw C: s=r D: ∆s/∆t

Q54 : Rainbow is seen after rain because of hanging molecules of water which act as __________?

A: Lens B: Prism C: Mirror D: Slabs

Q55 : The speed of light will be minimum while passing through ?

A: Vaccum B: Glass C: Water D: Air

Q56 : Potential energy means?

A: Due to position of object B: Due to motion of object C: Due to gravity D: None of these

Q57 : Least distance of distinct vision_____________?

A: increases with increase in age B: decreases with increase in age C: neither increases nor decreases D: becomes infinite after 60 years

Q58 : Composition of Ozone layer?

A: O1 B: O2 C: O3 D: O4

Q59 : The penetrating power of X-rays depends on their______________?

A: applied voltage B: frequency C: source D: all of the above

Q60 : In fission process_______.

A: massive nucleus join together B: massive nucleus splits to form smaller fragments C: both A & B D: None of these

Q61 : By how many times are the Electrostatic forces stronger than the Gravitational Forces for a fixed distance?

A: 102 B: 1036 C: 1012 D: None of these

Q62 : The electronic circuits which implement the various logic operations are called_____________?

A: Logic gates B: Boolean algebra C: Amplifier gain D: Logic functions

Q63 : The core of a transformer is laminated to reduce energy losses due to__________?

A: Eddy currents B: Hysteresis C: Resistance in winding D: None of these

Q64 : The working of transistor as amplifier is similar to________________?

A: Step up transformer B: Step down transformer C: Three diodes in common D: Triode vacuum tube

Q65 : The light used in optical fiber transmission is________?

A: Dichromatic B: Monochromatic C: Pentachromatic D: None of these

Q66 : An example of scalar quantity is _________?

A: Displacement B: Speed C: Velocity D: Acceleration

Q67 : Product of wavelength and time period is _______________?

A: Frequency B: Velocity C: Time period D: Wavelength

Q68 : 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

Q69 : When average and instantaneous velocities become equal then body possess_______?

A: Uniform Velocity B: Variable Velocity C: Uniform Acceleration D: Variable Acceleration

Q70 : Who were the pioneers of Physics?

A: Egyptians B: Greek C: Latin D: Persians

Q71 : Identify the correct statement about minority carriers_____________?

A: holes in n-type and free electrons in p-type B: holes in n-type and p-type C: free electrons in n-type and holes in p-type D: free electrons in n-type and p-type

Q72 : Newton’s first law of motion gives the concept of _________?

A: Energy B: Energy C: Inertia D: Momentum

Q73 : Image of an object 5 mm high is only 1 cm high. Magnification produced by lens is__________________?

A: 0.5 B: 0.2 C: 1 D: 2

Q74 : The reverse of LED is______?

A: Diode B: Resistor C: Photodiode D: Capacitor

Q75 : Oil rises up to wick in a lamp because_____________?

A: Oil is very light B: Oil is volatile C: Diffusion of oil through the wick D: Capillary action phenomenon

Q76 : How many coloumns in the modern Periodic Table?

A: 17 B: 19 C: 18 D: None of these.

Q77 : Which instrument is suitable to measure the internal diameter of a test tube?

A: Vernier Callipers B: Screw Gauge C: Bore Gauge D: None

Q78 : When a projectile moves upward , its vertical component of velocity?

A: Decrease B: increase C: Remains same D: None of these

Q79 : Unit vector is used to specify the _____________?

A: Magnitude B: Velocity C: Direction of vector D: Frequency

Q80 : If the pressure of a given gas is held constant its density is inversely proportional to its absolute temperature. We can refer it as another statement of______________?

A: Boyles law B: Charles law C: Ideal gas law D: Avagadros law

Q81 : The function of collimeter in spectrometer is________________?

A: to produce parallel beams of light B: to filter the light rays C: to make them D: no function

Q82 : The power of a concave lens is_______________?

A: real B: virtual C: positive D: negative

Q83 : Compton’s effects was presented by: ________?

A: Mosely B: Marley C: Arthur Holly Compton D: Stefan Boltzman

Q84 : The value of critical angle for glass is_______________?

A: 42° B: 47° C: 52° D: 50°

Q85 : The synopsis of Einstein’s equation E = mc² is that

A: The faster you move, the lighter you get B: The faster you move, the heavier you get C: The slower you move, the heavier you get D: None of the above

Q86 : In n-p-n transistor, p works as______________?

A: collector B: emitter C: base D: any of above

Q87 : The relativistic energy E is equivalent to relativistic mass given by_______________?

A: Ec2 B: E/c2 C: E/c D: c2/E

Q88 : An optical instrument which is used measure the properties of visible light is called?

A: Microscope B: Telescope C: Spectroscope D: Oscilloscope

Q89 : In the transistor schematic symbol, the arrow_______________?

A: is located on the emitter B: is located on the base C: is locate on the collector D: points form north to south

Q90 : A photon is always considered to be: ________?

A: Moving with speed of light B: At rest C: In accelerated form D: Moving with speed of sound

Q91 : Two parallel beams of positrons moving in the same direction will________?

A: repel each other B: not interact with each other C: attract each other D: be deflected normal to the plane containing the two beams.

Q92 : An OP-AMP comparator is a circuit that compares the signal voltage on one of its inputs with a ______________?

A: Non-inverting voltage at output B: Reference voltage on the other C: Virtual input D: Output

Q93 : A point where the incident parallel rays of light converge or appear to diverge after passing through a lens is called______________?

A: center of curvature B: focus C: optical center D: aperture

Q94 : The name of the photon for quantum of light was proposed by________________?

A: Ampere B: Plank C: Thomson D: Einstein

Q95 : Which one is true for internal energy ?

A: It is sum of all forms of energies associated with molecules of a system B: It is a state function of a system C: It is proportional to transnational K.E of the molecules D: All are correct

Q96 : If an object is placed away from 2f of a converging lens then the image will be_______________?

A: real and erect B: virtual and erect C: real and inverted D: virtual

Q97 : the area enclosed by the curve ABCDA for a Carnot heat engine represents the work done by Carnot engine_______________?

A: at any instant B: averagely C: during its operation D: during one cycle

Q98 : Which of the following is not a unit of length?

A: light year B: radian C: angstrom D: micron

Q99 : The minimum distance between an object and its real image in a convex lens is_____________?

A: 2 f B: 2.5 f C: 3f D: 4f

Q100 : If the distance-time graph gives a straight line then body possesses___________?

A: Zero Velocity B: Uniform Velocity C: Variable Velocity D: None

Free Physics MCQs Mock Test Online with Answers

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