Que- Tensional forces normally cause which one of the following?
a. Normal faults
b. Strike-slip faults
c. Thrust faults
d. Reverse faults
Answer- Normal faults
Que- Amount of water vapour in the atmosphere is measured in terms of
a. Humidity
b. Droplets
c. Smog
d. All of the above
Answer- Humidity
Que- For an ideal gas, which one of the following statements does not hold true?
a. The speed of all gas molecules is same
b. The kinetic energies of all gas molecules are not same
c. The potential energy of the gas molecules is zero
d. There is no interactive force between the molecules.
Answer- The speed of all gas molecules is same
Que- Due to temperature variation along a conductor, potential variation occurs along it. This phenomenon is known as
a. Thomson effect
b. Joule effect
c. Seebeck effect
d. Peltier effect
Answer- Thomson effect
Que- The transport phenomenon occurs only in ________ state of a gas and is ________
a. Non-equilibrium, irreversible
b. Non-equilibrium, reversible
c. Equilibrium, irreversible
d. Equilibrium, reversible
Answer- Equilibrium, irreversible
Que- For which one of the following, ''Diodes" are generally used for?
a. Rectification
b. Amplification
c. Modulation
d. Filtration
Answer- Rectification
Que- The width of depletion layer of a P-N junction
a. Decreases with light doping
b. Increases with heavy doping
c. Is independent of applied voltage
d. Is increased under reverse bias
Answer- Is increased under reverse bias
Que- The impurity atoms with which silicon should be doped to make p-type semiconductors are
a. Phosphorus
b. Antimony
c. Boron
d. Germanium
Answer- Boron
Que- Which of the following is used for regulated electric supply ?
a. Zener diode
b. Junction diode
c. Gun diode
d. Tunnel diode
Answer- Zener diode
Que- A NOT gate can be implemented by:
a. A single diode
b. Two diodes
c. A single resistor
d. A single transistor
Answer- A single transistor
Que- In which form is the supplied heat energy stored during change in temperature of substance?
a. Heat energy
b. Kinetic energy
c. Potential energy
d. Both kinetic and potential energy
Answer- Kinetic energy
Que- What is another name for energy of motion?
a. Motional energy
b. Potential energy
c. Kinetic energy
d. Rotational energy
Answer- Kinetic energy
Que- The rate at which energy is transferred is called
a. Power
b. Watt
c. Volt
d. Potential
Answer- Power
Que- An object with a mass of 22 kg moving with a velocity of 5 m/s possesses a kinetic energy of :
a. 275 J
b. 110 J
c. 2750 J
d. 110 J
Answer- 275 J
Que- In which of the following processes is energy released ?
a. Respiration
b. Photosynthesis
c. Ingestion
d. Absorption
Answer- Respiration
Que- Which one of the following is not a property of electromagnetic waves?
a. Electromagnetic waves do not show interference and diffraction.
b. Oscillating electric field and magnetic field are perpendicular to each other.
c. Electromagnetic waves are transverse waves
d. Electromagnetic waves do not require a medium to propagate.
Answer- Electromagnetic waves do not show interference and diffraction.
Que- Which one of the waves have the longest wavelength
a. Violet
b. Red
c. Blue
d. Green
Answer- Red
Que- Remote-sensing device has an inbuilt source of
a. X-ray
b. G-ray
c. Ultraviolet ray
d. Infrared ray
Answer- Infrared ray
Que- Indicate the correct arrangement for electromagnetic radiation in order of their increasing wavelength.
a. Microwave, infrared, visible. X-rays
b. X -rays, visible, infrared, microwave
c. Visible, infrared, microwave, X-rays
d. X - rays, infrared, visible, microwave
Answer- X - rays, infrared, visible, microwave
Que- Which of the following has the shortest wavelength?
a. Gamma rays
b. Radio waves
c. Microwaves
d. Infrared rays
Answer- Gamma rays
Que- The best conductor of electricity among the following is :
a. Copper
b. Iron
c. Aluminium
d. Silver
Answer- Silver
Que- Kilowatt-hour is the unit of :
a. Energy
b. Power
c. Force
d. Momentum
Answer- Energy
Que- Copper wires are generally used for electrical power transmission instead of iron wire because :
a. Copper is cheaper than iron
b. Copper is lighter than iron
c. Copper is a better conductor of electricity than iron
d. Copper can take higher power than iron
Answer- Copper is a better conductor of electricity than iron
Que- The earth-wire of a cable is connected to
a. The outer metallic body of the appliance
b. The fuse of the appliance
c. The filament of the appliance
d. Short circuitry of the appliance
Answer- The fuse of the appliance
Que- Lightning is caused due to
a. Electric power
b. Electric discharge
c. Electric leak
d. Electric pressure
Answer- Electric discharge
Que- In a magnetic field, the direction of motion of a current carrying conductor is given by
a. Maxwell's right hand rule
b. Lenz's rule
c. Flemings left hand rule
d. Kirchoff's law
Answer- Flemings left hand rule
Que- The force between charged particles is called as:
a. Nuclear Force
b. Gravitational Force
c. Centrifugal Force
d. Electromagnetic Force
Answer- Electromagnetic Force
Que- Moving electric charge produces :
a. Magnetic field
b. Sound waves
c. Light rays
d. Heat waves
Answer- Magnetic field
Que- Nuclear sizes are expressed in a unit named
a. Fermi
b. Angstrom
c. Newton
d. Tesla
Answer- Fermi
Que- Beta rays emitted by a radioactive material are
a. The electrons orbiting around the nucleus
b. Charged particles emitted by nucleus
c. Neutral particles
d. Electromagnetic radiations
Answer- Charged particles emitted by nucleus
Que- Noise is measured in
a. Watt
b. REM
c. Centigrade
d. Decibel
Answer- Decibel
Que- Man perceives sound vibrations in the frequency ranges of
a. 0 – 5 Hz
b. 6 – 10 Hz
c. 11 – 20 Hz
d. 20 – 20000 Hz
Answer- 20 – 20000 Hz
Que- Instrument used to study the behaviour of a vibrating string is :
a. Barometer
b. Hydrometer
c. Hygrometer
d. Sonometer
Answer- Sonometer
Que- Among the following materials sound travels fastest in
a. Steel
b. Air
c. Vacuum
d. Water
Answer- Steel
Que- Sound becomes hazardous noise pollution at decibels?
a. Above 120 db
b. Above 80 db
c. Above 50 db
d. Above 30 db
Answer- Above 120 db
Que- Who is known as the 'father of quantum theory'?
a. Albert Einstein
b. Max Planck
c. Werner Heisenberg
d. Ernest Rutherford
Answer- Max Planck
Que- Which of the following occurred first ?
a. Albert Einstein propounded the General Theory of Relativity
b. Max Planck unveiled the Quantum Theory
c. Guglielmo Marconi sent out the first wireless signals
d. Wright Brothers successfully flew an aircraft
Answer- Guglielmo Marconi sent out the first wireless signals
Que- Which of the following is not a valid conservation law of classical physics?
a. Law of conservation of energy
b. Law of conservation of current
c. Law of conservation of angular momentum
d. Law of conservation of charge
Answer- Law of conservation of current
Que- Who among the following gave the Uncertainty principle?
a. R.A Milkman
b. Ernset Rutherford
c. S.N Bose
d. Werner Heisenberg
Answer- Werner Heisenberg
Que- Propagation of sound can be visualised as propagation of ________ variations in the medium
a. Elasticity
b. Viscosity
c. Density
d. Porosity
Answer- Density
Que- Permissible noise level at Residential area during night time is :
a. 45 dB (A)
b. 55 dB (A)
c. 75 dB (A)
d. 80 dB (A)
Answer- 45 dB (A)
Que- Which waves cannot be transmitted through vacuum?
a. Electromagnetic
b. Light
c. Sound
d. Heat
Answer- Sound
Que- Submerged objects can be located using
a. Radar
b. Sonar
c. Quasar
d. Pulsar
Answer- Sonar
Que- The Law of Kepler is related with which among the following ?
a. Planetary Motion
b. Law of Conservation of energy
c. Law of Gravitation
d. None
Answer- Planetary Motion
Que- The term ''equinox' means
a. The path which the Earthtakes around the Sun
b. The axis of the Earth around which it rotates
c. When the day and night are of equal duration
d. The time when the Sun seems to be going round and round in the sky in the Arctic but does not go below the horizon
Answer- When the day and night are of equal duration
Que- If the earth suddenly stop rotating, the value of "g" will be
a. Same
b. Increase
c. Decrease
d. Become Zero
Answer- Increase
Que- If an empty cylinder is half filled with a liquid, its center of gravity is
a. Shifted upwards
b. Shifted downwards
c. Shifed neither upward nor downward
d. Shifted upward or downward depending on the density of the liquid
Answer- Shifted downwards
Que- Temperature of distant luminous bodies can be determined by
a. Mercury thermometers
b. Gas thermometers
c. Pyrometers
d. Colour thermometers
Answer- Pyrometers
Que- The SI unit of luminous emittance is :
a. Lux
b. Candela
c. Lumen
d. Lumen second
Answer- Lux
Que- The unit of measurement of noise is
a. Decibel
b. Hertz
c. Amplifier
d. Acoustics
Answer- Decibel
Que- Which of the following pair is Incorrect? I. Parsec - Distance II. Barrel - Liquid III. Light year - Time
a. Only III
b. Only I and III
c. Only II
d. All are correct
Answer- Only III
Que- Radian is used to measure
a. Temperature
b. Intensity of Flame
c. Angle
d. Solid Angle
Answer- Angle
Que- What is the unit of the physical quantity Entropy?
a. Watt per kelvin
b. Newton per kelvin
c. Pascal per kelvin
d. Joule per kelvin
Answer- Joule per kelvin
Que- What is the change in the angular momentum of a system as per the Law of Conservation of Angular momentum, if the total external torque acting is zero?
a. Remains constant
b. Becomes zero
c. Increases exponentially
d. None of the above
Answer- Remains constant
Que- The force that keeps a body in a circular motion called
a. The centripetal force
b. The centrifugual force
c. The frictional force
d. All the above
Answer- The centripetal force
Que- It is easier to carry two buckets of water in one hand each, than to carry only one in one hand because
a. Weights of buckets are balanced
b. Centre of gravity falls within the body
c. Centre of gravity and centre of equilibrium fall within the feet
d. Resultant weight of buckets is zero
Answer- Centre of gravity and centre of equilibrium fall within the feet
Que- The working of a rocket is based on the principle of:
a. Conservation of momentum
b. Conservation of mass
c. Conservation of energy
d. Conservation of angular momentum
Answer- Conservation of momentum
Que- A bomb at rest explodes into a large number of tiny fragments. The total momentum of all the fragments
a. Is zero
b. Depends on the total mass of all the fragments
c. Depends on the speeds of various fragments
d. Is infinity
Answer- Is zero
Que- Echolocation is an adaptation bats use to
a. Locate flowering plants
b. Hunt insects in flight
c. Find warm places for hibernation
d. All of the above
Answer- All of the above
Que- Bats can sense obstacles because they produce
a. Supersonic sound waves
b. Ultrasonic sound waves
c. Infrasonic sound waves
d. Micro sound waves
Answer- Ultrasonic sound waves
Que- A wavelength of 0.3 m is produced in air and it travels at a speed of 300 m/s. Then it will be an
a. Audible wave
b. Infrasonic wave
c. Ultrasonic wave
d. Microwave
Answer- Audible wave
Que- Which term is not associated with sound wave?
a. Hertz
b. Decibel
c. Candela
d. Mach
Answer- Candela
Que- Velocity of sound in air does not depend on
a. Density of air
b. Temperature of air
c. Pressure of air
d. Humidity of air
Answer- Pressure of air
Que- Resistance of human body in dry condition
a. 10 ohm
b. 1000 ohm
c. 10000 ohm
d. 100000 ohm
Answer- 100000 ohm
Que- The purpose of choke in a fluorescent lamp is :
a. To increase the current flow
b. To decrease the current flow
c. To decrease the resistance
d. Ro decrease the voltage momentarily
Answer- To decrease the current flow
Que- An electron and a proton starting from rest get accelerated through potential difference of 100 kV. The final speed of the electron and the proton are Ve and Vp respectively. Which of the following relations is correct?
a. Ve > Vp
b. Ve < Vp
c. Ve = Vp
d. Cannot be determined
Answer- Ve > Vp
Que- Superconductors are those elements
a. Whose conductivity is intermediate between metals and insulators
b. Whose resistance falls almost to zero at very low temperatures
c. Which turn into insulators at very low temperatures
d. Which conduct electricity only at super-high temperatures
Answer- Whose resistance falls almost to zero at very low temperatures
Que- A device used for converting a.c. into d.c. is called
a. Transformer
b. Rectifier
c. Induction coil
d. Dynamo
Answer- Rectifier
Que- Rate of doing work is called
a. Capacity
b. Energy
c. Power
d. Current
Answer- Power
Que- The energy associated with motion is called
a. Potential energy
b. Kinetic energy
c. Both A & B
d. None of the above
Answer- Kinetic energy
Que- The boiling point of water decreases at higher altitudes is due to
a. Low temperature
b. Low atmospheric pressure
c. High temprature
d. High atmospheric pressure
Answer- Low atmospheric pressure
Que- At boiling point of liquids, its
a. Temperature increases
b. Atmospheric pressure increases
c. Temperature remains constant
d. Vapour pressure decreases
Answer- Temperature remains constant
Que- Contact force is another name for ________
a. Friction
b. Magnetic force
c. Electrostatic force
d. Muscular force
Answer- Muscular force
Que- The odometer guage indicates
a. The distance travelled by a vehicle
b. The depth of the ocean
c. Pitch length
d. Frequency of the wave
Answer- The distance travelled by a vehicle
Que- If a force acts upon two objects at rest, and having different masses for the same amount of time, then which one of the following will be the same for both the objects?
a. Acceleration
b. Kinetic Energy
c. Velocity
d. Momentum
Answer- Momentum
Que- Consider the following statements : (01) There is no net moment on a body which is in equilibrium. (02) The momentum of a body is always conserved. (03) The kinetic energy of an object is always conserved. Which of the statements given above is/are correct?
a. 1, 2 and 3
b. 2 and 3 only
c. 1 and 2 only
d. 1 only
Answer- 1 and 2 only
Que- The rate of change of linear momentum of a body falling freely under gravity is equal to it's ________ ?
a. Kinetic Energy
b. Weight
c. Potential Energy
d. Impulse
Answer- Weight
Que- According to the theory of relativity, which of the following always remains constant ?
a. Length of an object
b. Time
c. Space
d. Velocity of light
Answer- Velocity of light
Que- Total internal reflection can not take place when light goes from :
a. Glass to water
b. Water to glass
c. Water to air
d. Glass to air
Answer- Water to glass
Que- A rear-view mirror for driving is
a. Plain
b. Concave
c. Convex
d. Inverted
Answer- Convex
Que- The reflector of a search light is a :
a. Convex mirror
b. Concave mirror
c. Plane mirror
d. Cylindrical mirror
Answer- Concave mirror
Que- Optical Fibre technology works on which of these principles of Physics?
a. Bernoulli's Principle
b. Newton's law of Motion
c. Total internal reflection of Light
d. Photoelectric effect
Answer- Total internal reflection of Light
Que- What is the reason for formation of Mirage in desert?
a. Refraction of light
b. Reflection of light
c. Total internal reflection of light
d. Both Refraction and Total internal reflection of light
Answer- Both Refraction and Total internal reflection of light
Que- Which elements are malleable and good conductors of electricity?
a. Tin and silver
b. Iodine and silver
c. Tin and xenon
d. Iodine and xenon
Answer- Tin and silver
Que- What is the value of 1 kW = ?
a. 1000 W
b. 10 W
c. 100 W
d. 10000 W
Answer- 1000 W
Que- The electric current in a metal wire is due to the flow of -
a. Electrons
b. Protons
c. Ions
d. Holes
Answer- Electrons
Que- An electric fuse is based on
a. The chemical effect of the current
b. The magnetic effect of the current
c. The heating effect of the current
d. All of the above
Answer- The heating effect of the current
Que- Metals are good conductors of electricity because
a. The atoms are lightly packed
b. They contain free electrons
c. They have high melting point
d. All the above
Answer- They contain free electrons
Que- Find the current (in A) when a charge of 1200C flows in 6 seconds.
a. 7200
b. 200
c. 100
d. 3600
Answer- 200
Que- Ventilators are provided near the ceiling of the room because
a. The exhaled warmer air rises up and goes out
b. These provide cross ventilation in the room
c. These provide some sunlight in the room
d. These do not look nice in the lower part
Answer- These provide cross ventilation in the room
Que- Wollen clothes keep the body warm because
a. Wool increases the temperature of the body
b. Wool is a bad conductor
c. Wool absorbs radiant heat from outer objects
d. Wool rejects heat from the outer objects
Answer- Wool is a bad conductor
Que- Plants are dried up in winter due to frost because
a. Evaporation does not take place
b. Photosynthesis does not take place at such low temperature
c. Respiration does not take place at low temperature
d. There is mechanical loss of tissues and drought condition prevails
Answer- There is mechanical loss of tissues and drought condition prevails
Que- A cup of hot coffee is placed on a metal table in a room. By which of the following methods does it lose heat?
a. Conduction and convection only
b. Conduction and radiation only
c. Convection and radiation only
d. Conduction, convection and radiation
Answer- Conduction, convection and radiation
Que- In general, which is the cause of a land breeze?
a. Pressure
b. Heat
c. Temperature
d. None of the above
Answer- Temperature
Que- Mist is caused by
a. Dry ice
b. Ice at low temperature
c. Water vapour at low temperature
d. Carbon-monoxide in solid form
Answer- Water vapour at low temperature
Que- Which colour is the complementary colour of yellow ?
a. Blue
b. Green
c. Orange
d. Red
Answer- Blue
Que- In sunlight a rose appears red. In green light, the same rose appears
a. Red
b. Black
c. Green
d. Yellow
Answer- Black
Que- When the Sun is near the horizon during the morning or evening, it appears reddish. The phenomenon that is responsible for this observation is
a. Reflection of light
b. Refraction of light
c. Dispersion of light
d. Scattering of light
Answer- Scattering of light
Que- Which combination of color is the most convenient during day and night time ?
a. Orange and blue
b. White and black
c. Yellow and blue
d. Red and green
Answer- Red and green
Que- An ideal gas cannot be
a. Liquified
b. Solidified
c. Both A & B
d. None of the above
Answer- Liquified