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