Physics MCQ (Multiple Choice Questions) - SchoolingAxis

Physics MCQ (Multiple Choice Questions)

 Que- Which of the following properties is found only in ferromagnetic materials ? 

a. Susceptibility independent of temperature 

b. Point in a particular direction 

c. Hysteresis 

d. Attracting a magnetic substance 

Answer- Hysteresis

Que- Magnetic field lines about a current-carrying wire 

a. Circle the wire in closed loops 

b. Extend radially from the wire 

c. Both of these 

d. None of the above 

Answer- Circle the wire in closed loops

Que- An Electric generator is based on which of the following scientific principles? 

a. Faraday's law of Electromagnetic Induction 

b. Super Conductivity 

c. Laws of Thermodynamics 

d. Newton's Law of Motion 

Answer- Faraday's law of Electromagnetic Induction

Que- Planck's constant has the dimensions of : 

a. Energy 

b. Linear momentum 

c. Angular momentum 

d. Force 

Answer- Energy

Que- What is the unit of Magnetic Induction? 

a. Ohm  

b. Farad  

c. Volt  

d. Henry  

Answer- Henry 

Que- In which region of electromagnetic spectrum does the Lyman series of hydrogen atom lie ? 

a. Visible 

b. Infrared 

c. Ultraviolet 

d. X-ray 

Answer- Ultraviolet

Que- Ozone layer above the surface of Earth provides a shield against 

a. X-rays 

b. Ultra-violet rays 

c. Gamma rays 

d. Infra-red rays 

Answer- Ultra-violet rays

Que- Anemometer is an instrument meant for measuring ________  

a. Velocity 

b. Air masses 

c. Wind speed 

d. Temperature 

Answer- Wind speed

Que- A fountain pen works on the principle of 

a. Flow of liquids from higher to lower potential 

b. Capillary action 

c. Bernoulli's principle 

d. Viscosity of liquids 

Answer- Capillary action

Que- A barometer is kept inside a bell jar. Air is slowly pumped out of the jar. 

a. The mercury level starts rising 

b. The mercury level starts falling 

c. The mercury level does not change 

d. The bell jar breaks up 

Answer- The mercury level starts rising

Que- The temperature at which water boils depends mainly on 

a. Air Pressure 

b. Specific heat 

c. Density 

d. Relative humidity 

Answer- Air Pressure

Que- Air pressure is measured in which of the following units? 

a. Steridian 

b. Kg/mts 

c. Newton 

d. Pascal 

Answer- Pascal

Que- A light year is a measure of : 

a. Speed 

b. Velocity 

c. Distance 

d. Time 

Answer- Distance

Que- One billionth of a second is called 

a. Microsecond 

b. Picoseconds 

c. Millisecond 

d. Nanosecond 

Answer- Nanosecond

Que- Which one of the following is the value of one nanometer? 

a. 10-7 cm 

b. 10-6 cm 

c. 10-4 cm 

d. 10-3 cm 

Answer- 10-7 cm

Que- If the length of a simple pendulum is halved then its period of oscillation is 

a. Doubled 

b. Halved 

c. Increased by a factor 2 

d. Decreased by a factor 2 

Answer- Decreased by a factor 2

Que- A colour-blind person cannot 

a. See distant objects 

b. See black colour 

c. Distinguish between certain colours 

d. Have persistence of vision 

Answer- Distinguish between certain colours

Que- Magnifying Glass is basically a 

a. Plano-concave lens 

b. Concave lens 

c. Convex lens 

d. Cylindrical lens 

Answer- Convex lens

Que- A microscope used in pathological laboratories forms 

a. Magnified, virtual, erect image 

b. Diminished, real and erect image 

c. Magnified, virtual and inverted image 

d. Diminished, virtual and erect image 

Answer- Magnified, virtual and inverted image

Que- What is the force of attraction between any two bodies by virtue of their masses is called? 

a. Electromagnetic Force 

b. Gravitational Force 

c. Centripetal Force 

d. Nuclear Force 

Answer- Gravitational Force

Que- If a boy sitting in a train, which is moving at a constant velocity, throws a ball straight up into the air, the ball will 

a. Fall in front of him 

b. Fall behind him 

c. Fall into his hand 

d. None of the above 

Answer- Fall into his hand

Que- When a bar magnet is cut into two equal halves, the pole strength of each piece – 

a. Becomes double 

b. Becomes half 

c. Becomes zero 

d. Remains the same 

Answer- Remains the same

Que- A permanent magnet can affect 

a. Magnets 

b. Electromagnets 

c. Both A & B 

d. None of the above 

Answer- Both A & B

Que- A freely suspended magnet remains horizontal at 

a. The magnet equator  

b. The magnetic north pole  

c. The magnetic south pole  

d. The geographic pole  

Answer- The magnet equator 

Que- Optical fibre works on which of the following principle of light? 

a. Reflection 

b. Refraction 

c. Diffraction 

d. Total internal reflection 

Answer- Total internal reflection

Que- Which colour of light shows maximum deviation when passed through a prism ? 

a. White 

b. Red 

c. Violet 

d. Green 

Answer- Violet

Que- The sparkling of a diamond is due to 

a. Total internal reflection of light 

b. Interference of light 

c. Polarisation of light 

d. Refraction of light 

Answer- Total internal reflection of light

Que- Stars appear twinkling because of ......... of light. 

a. Reflection 

b. Scattering 

c. Emission 

d. Absorption 

Answer- Scattering

Que- Stars in the sky appear to twinkle due to 

a. A series of refractions 

b. A series of reflections 

c. A surface tension phenomenon 

d. Multiple diminishing brightness 

Answer- A series of refractions

Que- The quantity that is not conserved in an inelastic collision is 

a. Momentum  

b. Kinetic Energy  

c. Total Energy  

d. All of these  

Answer- Kinetic Energy 

Que- The dimension MLT–2 corresponds to 

a. Force 

b. Work done 

c. Acceleration 

d. Velocity 

Answer- Force

Que- If lift is going up with acceleration, the apparent weight of a body is 

a. May be more or less than true weight 

b. More than the true weight 

c. Less than the true weight 

d. Equal to the true weight 

Answer- More than the true weight

Que- The force that generates wind is 

a. Gravity force 

b. Pressure gradient force 

c. Coriolis force 

d. Centrifugal force 

Answer- Pressure gradient force

Que- A boy sitting in a train moving with a uniform velocity drops a coin outside. A man standing outside the train will find the trajectory of the coin to be 

a. A parabola 

b. A circle 

c. A horizontal straight line 

d. A vertical straight line 

Answer- A parabola

Que- The energy of a photon varies directly with its 

a. Wave length  

b. Frequency  

c. Speed  

d. None of the above  

Answer- Frequency 

Que- A photon of X-ray has energy of 1 keV. A photon of visible radiation has energy of 3 eV. In this context, which one of the following statements is not correct? 

a. The wavelength of X-ray photon is less than the wavelength of visible radiation photon. 

b. Both the photons have different energies. 

c. The speeds of both the photons in vacuum are different 

d. The frequency of X-ray photon is higher than the frequency of visible radiation photon. 

Answer- The speeds of both the photons in vacuum are different

Que- The threshold frequency is the frequency below which : 

a. Photo current increases with voltage 

b. Photo current decreases with voltage 

c. Photo electric emission is not possible 

d. Photo current is constant 

Answer- Photo electric emission is not possible

Que- Which of the following supports particle nature of photons ? 

a. Diffraction 

b. Polarization 

c. Photoelectric effect 

d. Interference 

Answer- Photoelectric effect

Que- The size of gear is usually specified by 

a. Pitch circle diameter 

b. Diametral pitch 

c. Pressure angle 

d. Circular pitch 

Answer- Pitch circle diameter

Que- Which of the following is a compound machine? 

a. Screw 

b. Knife 

c. Bicycle 

d. Ramp 

Answer- Bicycle

Que- Which of the following is an example for cantilever beam? 

a. Diving board 

b. Bridge 

c. See-saw 

d. Common balance 

Answer- Bridge

Que- A machine powered by rotating blades is a 

a. Fumerole 

b. Turbines 

c. Solar panel 

d. None of the above 

Answer- Turbines

Que- Second and third class levers are differentiated by 

a. The location of the load 

b. The location of the fulcrum 

c. The presence of multiple loads 

d. The type of fulcrum present 

Answer- The location of the load

Que- Which of the following is not a transverse wave? 

a. Light waves 

b. Radio waves 

c. Sound waves 

d. All the above 

Answer- Sound waves

Que- What is the name of the device used to convert alternating current into direct current ? 

a. Ammeter 

b. Galvanometer 

c. Rectifier 

d. Transformer 

Answer- Rectifier

Que- A Step-Up transformer increases 

a. Power 

b. Current 

c. Frequency 

d. Voltage 

Answer- Voltage

Que- A transformer 

a. Converts DC to AC 

b. Is used to decrease or increase AC voltage 

c. Converts AC voltage to D.C. voltage 

d. Converts electrical energy into mechanical energy 

Answer- Is used to decrease or increase AC voltage

Que- In AC circuits, AC meters measure 

a. Mean values 

b. Rms values 

c. Peak values 

d. Mean square values 

Answer- Rms values

Que- If the diameter of a capillary is doubled, then the rise of water in it will be 

a. Two times 

b. Half 

c. Four times 

d. No change 

Answer- Half

Que- A needle or a pin floats on the surface of water because of 

a. Surface tension 

b. Surface energy 

c. Viscosity 

d. Adhesive force 

Answer- Surface tension

Que- Materials for rain proof coats and tents owe their water proof properties to 

a. Surface tension 

b. Viscosity 

c. Specific gravity 

d. Elasticity 

Answer- Surface tension

Que- Soap bubble attains spherical shape due to ________  

a. Inertia 

b. Pressure 

c. Surface tension 

d. Viscosity 

Answer- Surface tension

Que- Water drops cannot stick to the oily surface due to 

a. Lack of adhesive force 

b. Surface tension 

c. Cannot mix each other 

d. Water is lighter than oil 

Answer- Surface tension

Que- Lux is the SI unit of 

a. intensity of illumination 

b. luminous efficiency 

c. luminous flux 

d. luminous intensity 

Answer- intensity of illumination

Que- On a rainy day, small oil films on water show brilliant colours. This is due to 

a. dispersion 

b. interference 

c. diffraction 

d. polarization 

Answer- interference

Que- Point A is at a lower electrical potential  than point B. An electron between them on the line joining them will 

a. Move towards A 

b. Move towards B 

c. Move at right angles to the line joining A and B 

d. Remain at rest 

Answer- Move towards B

Que- Materials for rain-proof coats and tents owe their water-proof properties to 

a. surface tension 

b. viscosity 

c. specific gravity 

d. elasticity 

Answer- surface tension

Que- RADAR is used for: 

a. locating submerged submarines. 

b. receiving a signals in a radio receiver. 

c. locating geostationary satellites. 

d. detecting and locating the position of objects such as Aeroplanes. 

Answer- detecting and locating the position of objects such as Aeroplanes.

Que- Which of the following pairs of physical quantities have the same dimensions? 

a. Force and Power 

b. Work and Power 

c. Work and Energy 

d. Momentum and Power 

Answer- Work and Energy

Que- What is the fundamental unit of amount of a substance? 

a. Mole 

b. Candela 

c. Kelvin 

d. Meter 

Answer- Mole

Que- The motion of a body that repeats itself after a regular interval of time is 

a. A periodic motion 

b. A simple harmonic motion 

c. An aperiodic motion 

d. An oscillatory motion 

Answer- A periodic motion

Que- Negative acceleration is in the opposite direction of: 

a. Force 

b. Distance 

c. Velocity 

d. Momentum 

Answer- Velocity

Que- If an object moves with constant velocity, 

a. It must have constant speed 

b. It must have constant direction 

c. It must have constant speed in constant direction 

d. None of the above 

Answer- It must have constant speed in constant direction

Que- The Capacity of a communication channel is measured in 

a. Band rate 

b. Band width 

c. Data flow 

d. Bit capacity 

Answer- Band width

Que- The frequency used in TV and radar system lies in 

a. VHF  

b. HF  

c. SHF  

d. UHF  

Answer- UHF 

Que- Modem is used mostly for ? 

a. A modern empty memory modules 

b. Connecting to internet 

c. Mostly for file system 

d. All the above 

Answer- Connecting to internet

Que- Choose the most appropriate answer: In which atmospheric layer are the communication satellites located? 

a. Stratosphere 

b. Ionosphere 

c. Troposphere 

d. Mesosphere 

Answer- Ionosphere

Que- What is the SI unit of Power? 

a. Boyle 

b. Watt 

c. Newton 

d. Pascal 

Answer- Watt

Que- For which one of the following does the centre of mass lie outside the body? 

a. A fountain pen 

b. A cricket ball 

c. A ring 

d. A book 

Answer- A ring

Que- When a pail of water is swung in a vertical circle, the water does not fall out at the top of the loop when the speed is 

a. Below a certain minimum value irrespective of amount of water in the pail 

b. Above a certain minimum value irrespective of amount of water in the pail 

c. Above a certain minimum value depending on amount of water in the pail 

d. Below a certain minimum value depending on amount of water in the pail 

Answer- Above a certain minimum value irrespective of amount of water in the pail

Que- Fat can be seperated from milk in a cream seperator because of : 

a. Cohesive Force 

b. Gravitational Force 

c. Centripetal Force 

d. Centrifugal Force 

Answer- Centrifugal Force

Que- In case of uniform circular motion, the acceleration is 

a. Variable in magnitude but constant in direction 

b. Constant in magnitude and directed radially inwards 

c. Variable in magnitude but tangential to the circle 

d. Zero 

Answer- Variable in magnitude but constant in direction

Que- An oil drop spreads over water because 

a. Oil is lighter than water 

b. Oil is more viscous 

c. Oil does not mix with water 

d. water has a higher surface tension 

Answer- water has a higher surface tension

Que- Rotameter is used to measure 

a. Vortex flow 

b. Density of fluids 

c. Velocity of fluid in pipes 

d. Flow of fluids 

Answer- Flow of fluids

Que- Siphon will fail to work if 

a. The level of the liquid in the two vessels are at the same height 

b. The temperature of the liquids in the two vessels are the same 

c. The densities of the liquid in the two vessels are equal 

d. Both its limbs are of unequal length 

Answer- The level of the liquid in the two vessels are at the same height

Que- Sprayer functions on 

a. Bernouli's principle 

b. Archemede's principle 

c. Pascal's law 

d. Floatation principle 

Answer- Bernouli's principle

Que- A drop of liquid assumes spherical shape because: 

a. Intermolecular forces are strong in liquids 

b. A sphere has the least surface area for a given volume 

c. A sphere has the largest surface area for a given volume 

d. Inter molecular forces are weak in liquids 

Answer- A sphere has the least surface area for a given volume

Que- In a photocell light energy is converted into 

a. Potential energy 

b. Chemical energy 

c. Heat energy 

d. Electrical energy 

Answer- Electrical energy

Que- A voltaic cell converts chemical energy to 

a. Heat energy 

b. Electrical energy 

c. Mechanical energy 

d. Light energy 

Answer- Electrical energy

Que- The work done by the string of a simple pendulum during one complete oscillation is equal to 

a. Total energy of the pendulum 

b. Kinetic energy of the pendulum 

c. Potential energy of the pendulum 

d. Zero 

Answer- Zero

Que- Conversion of sound energy into electrical energy is done by 

a. Solar cell 

b. Gramophone 

c. Microphone 

d. Loudspeaker 

Answer- Microphone

Que- Who gave black hole theory? 

a. Albert Einstein  

b. Stephen Hawking  

c. Isaac Newton  

d. None of the above  

Answer- Stephen Hawking 

Que- The capacity of a water heater is measured in 

a. Gallons 

b. Litres 

c. Metres 

d. Both A & B 

Answer- Both A & B

Que- How many bottles of water is a gallon? 

a. 16 

b. 8 

c. 4 

d. 2 

Answer- 8

Que- What is the unit of the physical quantity "Jerk"? 

a. Meter second 

b. Meter per second cube 

c. Meter per second square 

d. Meter per second 

Answer- Meter per second cube

Que- What is the unit of relative density? 

a. Kg/m 

b. Kg/m2 

c. Kg/m3 

d. It has no unit 

Answer- It has no unit

Que- Choose the most appropriate answer: Natural radioactivity was discovered by 

a. Marie Curie 

b. Earnest Rutherford 

c. Henry Bacquerel 

d. Enrico Fermi 

Answer- Henry Bacquerel

Que- In a nuclear reactor, one of the following is used as a fuel. 

a. Coal 

b. Uranium 

c. Radium 

d. Diesel 

Answer- Uranium

Que- Alpha particle is the nucleus of an atom of 

a. Lithium 

b. Hydrogen 

c. Helium 

d. Oxygen 

Answer- Helium

Que- Energy stored in the nucleus of an atom is called 

a. Nuclear energy 

b. Atomic energy 

c. Potential energy 

d. Kinetic energy 

Answer- Nuclear energy

Que- In nuclear reactor, heavy water is used as 

a. Coolant 

b. Fuel 

c. Moderator 

d. Atomic smasher 

Answer- Moderator

Que- The three famous law of Kepler is related to 

a. Optics  

b. Speed  

c. Oscillations  

d. Planetary Motion  

Answer- Planetary Motion 

Que- In Astrophysics, what name is given to a hypothetical hole in outer space from which stars and energy emerge? 

a. Black hole 

b. Ozone hole 

c. Asteroid belt 

d. White hole 

Answer- White hole

Que- If there were no gravity, which of the following will not be there for a fluid? 

a. Viscosity 

b. Surface Tension 

c. Pressure 

d. Upward Thrust 

Answer- Upward Thrust

Que- Number of lattices in the orthorhombic system is 

a. 4  

b. 5  

c. 7  

d. 8  

Answer- 7 

Que- The term ''Isoneph' indicates the lines of equal 

a. Cloudiness 

b. Salinity 

c. Rainfall 

d. Pressure 

Answer- Cloudiness

Que- A wheel-barrow is an example of 

a. Class III lever 

b. Pulley system 

c. Class I lever 

d. Class II lever 

Answer- Class II lever

Que- A single fixed pulley is used to draw water from a well because 

a. Efficiency is 100% 

b. Velocity ratio is low 

c. Mechanical advantage is high 

d. Force is applied in a convenient direction 

Answer- Force is applied in a convenient direction

Que- A fixture is defined as a device which 

a. Is used to check the accuracy of workpiece 

b. Holds and locates a workpiece and guides and controls one or more cutting tools 

c. Holds and locates a workpiece during an inspection or for a manufacturing operation 

d. All of the above 

Answer- Holds and locates a workpiece and guides and controls one or more cutting tools

Que- What type of simple machine is an axe? 

a. Lever 

b. Wedge 

c. Both A & B 

d. The screw 

Answer- Both A & B

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