Que- Moment of inertia is:
a. Vector
b. Scalar
c. Phasor
d. Tensor
Answer- Tensor
Que- Of the following natural phenomena, tell which one known in Sanskrit as 'deer's thirst'?
a. Rainbow
b. Earthshine
c. Halo
d. Mirage
Answer- Mirage
Que- Inside an aeroplane, flying at a high altitude,
a. the pressure is the same as that outside.
b. normal atmospheric pressure is maintained by the use of air pumps.
c. the pressure inside is less than the pressure outside.
d. normal humidity and partial vacuum are maintained.
Answer- normal atmospheric pressure is maintained by the use of air pumps.
Que- Sound travels with a different speed in media. In what order does the velocity of sound increase in these media?
a. Water, iron and air
b. Iron, air and water
c. Air, water and iron
d. Iron, water and air
Answer- Air, water and iron
Que- One thousand microns is equal to
a. 10-3m
b. 10-6m
c. 10-9m
d. 10-12m
Answer- 10-3m
Que- The motion of a freely falling body is an example of ________ accelerated motion.
a. Non-uniformly
b. Uniformly
c. Uniquely
d. Specially
Answer- Uniformly
Que- A body is initially moving with a velocity of 5 m/s. It undergoes an acceleration of 2 m/s2 for 4 seconds. Find the displacement (in m) of this body in these 4 seconds.
a. 4
b. 72
c. 36
d. 8
Answer- 36
Que- Formula for distance is
a. Speed x time
b. Time / speed
c. Speed x acceleration
d. Velocity / speed
Answer- Speed x time
Que- Which among the following is false about displacement?
a. It can be positive, negative or zero
b. Displacement is never greater than Distance
c. Its SI unit is meter
d. It is always positive
Answer- It is always positive
Que- The motion of the wheels of a bullock-cart while moving on the road is an example of
a. Oscillatory and rotatory motion
b. Oscillatory and translatory motion
c. Translatory and rotatory motion
d. Translatory motion only
Answer- Translatory and rotatory motion
Que- The waveform of a certain signal can be studied by
a. Spectrometer
b. Cathode ray oscilloscope
c. P – n junction diode
d. Sonometer
Answer- Sonometer
Que- The GPS device in an automobile uses which communication channel?
a. Satellite
b. Microwave
c. Radio frequency
d. Infrared
Answer- Satellite
Que- In a optical fibre cable, the signal is propagated along the
a. Inner Core
b. Cladding
c. Both core and cladding
d. Surface and cladding
Answer- Inner Core
Que- The audio signals of TV are
a. Amplitude modulated
b. Frequency modulated
c. Unmodulated
d. Velocity modulated
Answer- Frequency modulated
Que- In radio-communication, the signals emitted by transmitting antenna are reflected on
a. Stratosphere
b. Ozonosphere
c. Ionosphere
d. Troposphere
Answer- Ionosphere
Que- Which one of the following wavelengths of light is most effective in photosynthesis ?
a. Blue
b. Green
c. Orange
d. Yellow
Answer- Blue
Que- The optical phenomenon that is primarily responsible for the observation of rainbow on a rainy day is
a. Diffraction
b. Interference
c. Dispersion
d. Reflection
Answer- Dispersion
Que- An electron microscope gives higher magnification than an optical microscope, because :
a. It uses more powerful lenses
b. The velocity of electron is smaller than that of visible light
c. The electrons have more energy than the light particles
d. The wavelength of electrons is smaller as compared to the wavelength of visible light
Answer- The wavelength of electrons is smaller as compared to the wavelength of visible light
Que- The magnifying power of an astronomical telescope can be decreased by
a. Decreasing the focal length of the eyepiece
b. Increasing the focal length of the eyepiece
c. Increasing the focal length of the objective
d. None of these
Answer- Increasing the focal length of the eyepiece
Que- The light rays used for eliminating bacteria is
a. X-rays
b. Infrared rays
c. Microwave radiation
d. Ultra-violet radiation
Answer- Ultra-violet radiation
Que- Lamberts law is related to
a. Reflection
b. Refraction
c. Interference
d. Illumination
Answer- Illumination
Que- The wave of theory of light is based on
a. The laws of reflection
b. The laws of refraction
c. The inverse square law
d. Huyghens' principle
Answer- Huyghens' principle
Que- When a strong beam of light is passed through a colloidal solution, the light will
a. Be scattered
b. Pass unchanged
c. Be absorbed
d. Be reflected
Answer- Be scattered
Que- Which of these waves can be polarized ?
a. Sound waves in air
b. Longitudinal waves on a string
c. Transverse waves on a string
d. Light waves
Answer- Light waves
Que- The scientist who first sent electromagnetic waves to distant places is
a. James Clerk Maxwell
b. Heinrich Hertz
c. Thomas Alva Edison
d. John Logie Baird
Answer- Thomas Alva Edison
Que- Proton carry a
a. Positive Charge
b. Negative Charge
c. Variable Charge
d. Neutral Charge
Answer- Positive Charge
Que- Which of the following is preferred for accelerating electrons?
a. Betatron
b. Cyclotron
c. Synchrotron
d. Van de Graft Generator
Answer- Betatron
Que- Why does'nt the hydrogen atom emit X-rays?
a. It is very small in size
b. It has only one electron
c. Its energy levels are very close to each other
d. It is highly electropositive
Answer- Its energy levels are very close to each other
Que- What is a neuron ?
a. Basic unit of energy
b. Particle released during radioactivity
c. The anti-particle of neutron
d. Basic unit of nervous system
Answer- Basic unit of nervous system
Que- Which electromagnetic radiation is used for satellite communication ?
a. Ultraviolet
b. Infrared
c. Radiowave
d. Millimeter wave
Answer- Radiowave
Que- During uniform motion of an object along a straight line, its ________ remains constant with time.
a. Acceleration
b. Deceleration
c. Force
d. Velocity
Answer- Velocity
Que- A ball is thrown vertically upward from the ground. It crosses a point at the height of 25 m twice at an interval of 4 seconds. The ball was thrown with the velocity of
a. 18 m/s
b. 25 m/s
c. 30 m/s
d. 36 m/s
Answer- 30 m/s
Que- Rain drops fall from great height. Which among the following statements is true regarding it?
a. They fall with that ultimate velocity, which are different for different droplets
b. They fall with same ultimate velocity
c. Their velocity increases and they fall with different velocity on the earth
d. Their velocity increases and they fall with same velocity on the earth
Answer- They fall with that ultimate velocity, which are different for different droplets
Que- A particle dropped from the top of a tower uniformly falls on ground at a distance which is equal to the height of tower. Which of the following paths will be traversed by the particle ?
a. Circle
b. Parabolic
c. Great circle
d. Hyper–parabolic
Answer- Parabolic
Que- A particle is thrown vertically upward. When it reaches the highest point, it has
a. A downward acceleration
b. An upward acceleration
c. A downward velocity
d. A horizontal velocity
Answer- A downward acceleration
Que- Which phenomenon is responsible for the echo of sound wave?
a. Reflection
b. Refraction
c. Interference
d. Polarisation
Answer- Reflection
Que- Loudness of sound depends on
a. Frequency
b. Wavelength
c. Amplitude
d. Pitch
Answer- Amplitude
Que- Which one of the following animals can hear ultrasonic sound ?
a. Rat
b. Squirrel
c. Cat
d. Bat
Answer- Bat
Que- The instrument which uses sound waves to measure the depth of oceans is
a. Radar
b. Sonar
c. Altimeter
d. Venturimeter
Answer- Sonar
Que- Megahertz is a measurement of
a. Frequency
b. Speed
c. Wavelength
d. Capacity
Answer- Frequency
Que- Lens is made up of which glass
a. Ordinary glass
b. Pyrex glass
c. Flint glass
d. Cobalt glass
Answer- Flint glass
Que- The final image in a simple microscope is
a. Real, diminished and inverted
b. Real, magnified and erect
c. Virtual, magnified and erect
d. Virtual, diminished and erect
Answer- Virtual, magnified and erect
Que- Which microscope is often used to view metal surfaces?
a. Optical microscopes
b. Scanning tunneling microscopes
c. Electron microscopes
d. None of the above
Answer- Scanning tunneling microscopes
Que- Which of the following cannot be used for making lenses?
a. Plastic
b. Soil
c. Glass
d. Water
Answer- Soil
Que- The illuminating powers of two sources are compared by
a. A spectrometer
b. A photometer
c. A polarimeter
d. A fluxmeter
Answer- A photometer
Que- The velocity of sound is more in
a. Water
b. Air
c. Steel
d. Wood
Answer- Steel
Que- Echo is heard due to
a. Refraction
b. Scattering
c. Reflection
d. Interference
Answer- Reflection
Que- A person standing on a railway platform listens to the whistles of arriving and departing trains. The whistle heard is
a. The same in both cases in all respects
b. Of higher intensity when train arrives
c. Of higher pitch when train arrives
d. Of higher pitch when train departs
Answer- Of higher pitch when train arrives
Que- The sound produced by a bat is–
a. Audible
b. Subsonic
c. Infrasonic
d. Ultrasonic
Answer- Ultrasonic
Que- Sound is heard over longer distances on rainy days because
a. Sound travels slowly in moist air
b. Sound travels faster in moist air
c. Moist air does not absorb sound
d. Moist air absorbs sound
Answer- Sound travels faster in moist air
Que- Energy per unit volume is dimensionally equal to
a. Pressure
b. Force
c. Density
d. Work
Answer- Pressure
Que- To open a door easily, the handle should be fixed
a. Near the hinges
b. Away from mid-point opposite to hinges
c. In the middle
d. None of these
Answer- None of these
Que- Water boils at a lower temperature on the hills because
a. It is cold on the hills
b. There is less carbon dioxide on the hills
c. There is a decrease in air pressure on the hills
d. There is less oxygen
Answer- There is a decrease in air pressure on the hills
Que- The force exerted by a magnet is an example of ________
a. Non-contact force
b. Muscular force
c. Contact force
d. Electrostatic force
Answer- Non-contact force
Que- A man standing close to the platform at a railway station experiences a pulling force towards a fast moving train because of ________ .
a. Gravitational force between train and man
b. Illusion of the man
c. The centripetal force
d. Pressure difference due to fast moving air in between
Answer- Pressure difference due to fast moving air in between
Que- What is the range of Strong Nuclear force?
a. Infinite
b. Very short Subnuclear size
c. Very short Nuclear size
d. None
Answer- Very short Nuclear size
Que- Name the process of production of energy in the Sun
a. Nuclear fission
b. Radioactivity
c. Nuclear fusion
d. Ionization
Answer- Nuclear fusion
Que- Which type of reaction produces the most harmful radiation ?
a. Fusion reaction
b. Fission reaction
c. Chemical reaction
d. Photo-Chemical reaction
Answer- Fission reaction
Que- Energy is continuously created in the sun due to:
a. Nuclear fusion
b. Nuclear fission
c. Radioactivity
d. Artificial radioactivity
Answer- Nuclear fusion
Que- The mass defect is the result of what action occurring?
a. Mass being converted to energy when protons and neutrons bind together in a nucleus
b. Protons and electrons being attracted to each other
c. Energy being converted into moles of atoms when neutrons break apart protons
d. Mass being converted to energy when protons and neutrons break apart in a nucleus
Answer- Mass being converted to energy when protons and neutrons bind together in a nucleus
Que- Fuse wire is made of an alloy of
a. Tin and Lead
b. Tin and Copper
c. Lead and Copper
d. Copper and Silver
Answer- Tin and Lead
Que- In the electrical circuit of a house, the fuse acts as
a. A load
b. A thermopile
c. A safety device
d. A step down device
Answer- A safety device
Que- The nature of fuse wire is
a. High resistance and low melting point.
b. High resistance and high melting point.
c. Low resistance and high melting point.
d. Low resistance and low melting point.
Answer- High resistance and low melting point.
Que- Which of these is exhibiting kinetic energy?
a. An archer with a flexed bow
b. A person sitting on a couch while watching TV
c. A space station orbiting Earth
d. All of the above
Answer- A space station orbiting Earth
Que- An object having the capability to do work is said to possess
a. Inertia
b. Force
c. Pressure
d. Energy
Answer- Energy
Que- In a railway track, two rails are joined end to end with a gap in between them because
a. Steel can be saved
b. Accidents due to contraction in winter can be avoided
c. Air-gaps are necessary for bearing the weight of running train
d. Accidents due to expansion in summer can be avoided
Answer- Accidents due to expansion in summer can be avoided
Que- Air coolers are more suitable for
a. Hot and humid climate
b. Hot and dry climate
c. Cool and humid climate
d. Cool and dry climate
Answer- Hot and dry climate
Que- We feel cool when we sit near the fan, this is because
a. Fan gives cool air.
b. Fan cools surrounding air.
c. Air vapourises the sweat on our body.
d. We feel cool when air touches the body.
Answer- Air vapourises the sweat on our body.
Que- When hot-water is sprinkled on a hotter glass tumbler, it breaks because
a. Glass suddenly expands
b. Glass suddenly contracts
c. Water evaporates
d. Glass reacts chemically with water
Answer- Glass suddenly contracts
Que- A gap is left between two rails of a railway track to accommodate...... of the metal.
a. Areal expansion
b. Volume expansion
c. Linear expansion
d. Apparent expansion
Answer- Linear expansion
Que- If the distance between Sun and Earth becomes double, then the gravitational force on Earth will be
a. Double
b. Same
c. Half
d. One Fourth
Answer- One Fourth
Que- The large collection of stars, dust and gas held together by gravitational attraction between components is known as
a. Cluster
b. Atmosphere
c. Galaxy
d. Sun Family
Answer- Galaxy
Que- A person can jump higher on the moon's surface than on the earth because :
a. The moon's surface is rough
b. The acceleration due to gravity in moon is smaller than that on the earth.
c. The moon is cooler than earth
d. The moon has no atmosphere
Answer- The acceleration due to gravity in moon is smaller than that on the earth.
Que- The velocity required to place a vehicle in orbit around the moon is ________ that required to place it in orbit round the earth.
a. Less than
b. Greater than
c. Equal to
d. Greater than or equal to
Answer- Less than
Que- Which measurement depends on gravitational force?
a. Mass
b. Weight
c. Height
d. All of the above
Answer- Weight
Que- Thermocouple consists of
a. Two dissimilar metals
b. Two similar metals
c. Metal and a semiconductor
d. Metal and an insulator
Answer- Two dissimilar metals
Que- Water has maximum density at
a. 100°C
b. 0°C
c. 4°C
d. 273°C
Answer- 4°C
Que- When water freezes its density
a. Decreases
b. Becomes Zero
c. Remains constant
d. Increases
Answer- Decreases
Que- Which of the following are methods of heat transfer?
a. Convection
b. Evaporation
c. Revolution
d. Thermal Expansion
Answer- Convection
Que- Heat energy is transferred by conduction whenever molecules
a. Collide each other
b. Means of photons
c. Particles replaces there places
d. All of the above
Answer- Collide each other
Que- A cycle tyre bursts suddenly. This represents an :
a. Isothermal process
b. Adiabatic process
c. Isochoric process
d. Isoboric process
Answer- Adiabatic process
Que- Which has the lowest albedo?
a. Dark surfaces
b. Light surfaces
c. Both A & B
d. None of the above
Answer- Dark surfaces
Que- Which one of the following is a non-dimensional quantity?
a. Gas constant
b. Strain
c. Co-efficient of viscocity
d. Plank's constant
Answer- Strain
Que- The dimension of Planck constant equals to that of
a. Energy
b. Momentum
c. Angular momentum
d. Power
Answer- Angular momentum
Que- The recoiling of gun is an example of which of the following?
a. Law of Conservation of Angular Momentum
b. Law of Conservation of Linear Momentum
c. Conversion of Kinetic Energy to Potential Energy
d. Law of Conservation of Energy
Answer- Law of Conservation of Linear Momentum
Que- The hydraulic brakes used in automobiles is a direct application of :
a. Archimedes' principle
b. Toricellian law
c. Bernoulli's theorem
d. Pascal's law
Answer- Pascal's law
Que- If we want to calculate the pressure of a liquid at the bottom of a vessel, the quantity which is not required to determine it, is
a. Height of the liquid column
b. Surface area of the bottom of the vessel
c. Density of the liquid
d. Acceleration due to gravity at the bottom of the vessel
Answer- Surface area of the bottom of the vessel
Que- For which of the following game, players must have the knowledge of Pascal's law?
a. Climbing
b. Paragliding
c. Rafting
d. Scuba diving
Answer- Scuba diving
Que- Air pressure is usually highest when the air is
a. Warm and moist
b. Cool and dry
c. Warm and dry
d. Cool and moist
Answer- Cool and moist
Que- Which process allows water to enter the atmosphere?
a. Transpiration
b. Respiration
c. Condensation
d. Evaporation
Answer- Evaporation
Que- Solar cells work on the principle of
a. Photovoltaic effect
b. Photoelectric effect
c. Photoconductive effect
d. Photosynthesis
Answer- Photovoltaic effect
Que- Wind and solar energy are examples of
a. Non renewable
b. Renewable
c. Unsustainable
d. Limited
Answer- Renewable
Que- Electrostatic precipitator is used to control the pollution of
a. Air
b. Water
c. Noise
d. Thermal
Answer- Air
Que- Hydro-electric power is a:
a. non-renewable natural resource
b. A mixture of renewable and non-renewable natural resource
c. Neither renewable nor non renewable resource
d. Renewable natural resource
Answer- Renewable natural resource
Que- Energy that is produced commercially from coal is called
a. Light energy
b. Kinetic energy
c. Thermal energy
d. Potential energy
Answer- Thermal energy
Que- Velocitation is the tendency to
a. Be traveling at a speed that is faster than perceived
b. Be traveling at a speed that is slower than perceived
c. Both A & B
d. None of the above
Answer- Be traveling at a speed that is faster than perceived
Que- If the velocity-time graph of a particle is represented by y = mt + c, then the particle is moving with
a. Constant speed
b. Constant velocity
c. Constant acceleration
d. Varying acceleration
Answer- Constant acceleration
Que- Which one of the following is applicable to collision-coalescence process of precipitation?
a. Clouds which do not extend beyond the freezing level
b. Clouds which extend beyond the freezing level
c. All types of clouds
d. Cirrocumulus cloud
Answer- Clouds which do not extend beyond the freezing level
Que- The law of conservation of energy states that
a. Energy can neither be created nor destroyed
b. Energy can either be created nor destroyed
c. Energy can neither be created or destroyed
d. Energy can either be created or destroyed
Answer- Energy can neither be created nor destroyed
Que- A hunter on the ground wishes to shoot a bird on a tree at a distance with his rifle. He has to point the rifle
a. At the lower elevation than the bird
b. At a higher elevation than the bird
c. In the same direction as the bird
d. Vertically upwards
Answer- At a higher elevation than the bird