Que- Electricity is transmitted over long distances
a. It is fast
b. There is less wastage of energy
c. It is safer
d. It is cheaper
Answer- There is less wastage of energy
Que- We always see the same face of the moon, because
a. It is smaller than the earth
b. It revolves on its axis in adirection opposite to that ofthe earth
c. It takes equal time for revolution around the earth and rotation on its own axis
d. It rotates at the same speed as the earth around the sun
Answer- It takes equal time for revolution around the earth and rotation on its own axis
Que- The fact that the planets move around the Sun, not in circles but in ellipses, was first demonstrated by
a. Galileo
b. Martin Luther
c. Johannes Kepler
d. Copernicus
Answer- Johannes Kepler
Que- Stars are held together by
a. Gravitational forces
b. Electrical forces
c. Ionic forces
d. Magnetic forces
Answer- Gravitational forces
Que- The number of waves per second in a sound is called ________ of that sound.
a. Velocity
b. Frequency
c. Displacement
d. Acceleration
Answer- Frequency
Que- Sound waves do not show the phenomenon of
a. Refraction
b. Interference
c. Diffraction
d. Polarisation
Answer- Polarisation
Que- Speed of sound is maximum in which among the following?
a. Gases
b. Vaccum
c. Liquids
d. Solids
Answer- Solids
Que- The ringing of an electric bell in an enclosed evacuated glass bell jar is not heard outside because
a. The ringing is not loud enough
b. The glass of the bell jar absorbs the sound waves
c. The bell jar is too small
d. There is no air or any other gas in the bell jar
Answer- There is no air or any other gas in the bell jar
Que- What is the full form of "RADAR" ?
a. Radio Detecting and Ranging
b. Region Device and Ranging
c. Radio Detect and Rangs
d. Radio Device and Ranging
Answer- Radio Detecting and Ranging
Que- A cyclist leans inwards when he is negotiating a curve so that
a. He may increase his speed
b. His weight may be reduced
c. Necessary centripetal force may be available from the horizontal component of the normal reaction due to the track to maintain the curved motion.
d. No frictional force may be produced between the wheels and the axle
Answer- Necessary centripetal force may be available from the horizontal component of the normal reaction due to the track to maintain the curved motion.
Que- Knot is a measure of
a. The speed of ship
b. The curvature of spherical objects
c. Solar radiation
d. Intensity of earthquake shock
Answer- The speed of ship
Que- A pilot has to release the bomb to hit a target
a. Right above the target
b. Beyond the target
c. Before the target
d. None of these
Answer- Before the target
Que- What is the other name of Galileo's law of falling bodies?
a. Law of motion
b. Newton's first law
c. Newton's second law
d. Newton's third law
Answer- Newton's first law
Que- A disk and a sphere of same radius but different masses roll on two inclined planes of the same altitude and length. Which one of the two objects gets to the bottom of the plane first ?
a. Depends on their masses
b. Sphere
c. Disk
d. Both reach at the same time
Answer- Sphere
Que- The washing machine works on the principle of
a. Dialysis
b. Diffusion
c. Reverse osmosis
d. Centrifugation
Answer- Centrifugation
Que- When an unbalanced force acts on an object
a. Causes change in motion of the object
b. The speed & direction of the object will change
c. Causes the object to move
d. All of the above
Answer- All of the above
Que- What type of force acts on a car moving around a curve?
a. Centrifugal force
b. Cohesive force
c. Centripetal force
d. Gravitational force
Answer- Centripetal force
Que- Damp clothes are dried in spin dryers by the action of
a. Centripetal forces
b. Centrifugal forces
c. Central forces
d. Non central forces
Answer- Centrifugal forces
Que- The unit of noise pollution (level) is :
a. Decibel
b. Decimal
c. Ppm
d. None of these
Answer- Decibel
Que- The speed of sound travel fastest through
a. Liquid
b. Solid
c. Gas
d. None of the above
Answer- Solid
Que- Compressions and Rarefactions are characteristic of
a. Longitudinal waves
b. Transverse waves
c. Both A & B
d. Neither of A & B
Answer- Longitudinal waves
Que- Hertz is a unit for measuring
a. Intensity of waves
b. Frequency of waves
c. Wavelength
d. Clarity of waves
Answer- Frequency of waves
Que- What is the direction of torque?
a. Perpendicular to the direction of applied force
b. Same as the direction of applied force
c. Opposite to the direction of applied force
d. Parallel to the radius
Answer- Perpendicular to the direction of applied force
Que- The motion of a body around a circular path is an example of
a. Uniform velocity, variable acceleration
b. Uniform speed, uniform velocity
c. Uniform speed, variable velocity
d. Uniform speed, variable acceleration
Answer- Uniform velocity, variable acceleration
Que- What should a person on a freely rotating turn table do to decrease his (angular) speed ?
a. Bring his hands together
b. Raise his hands up
c. Spread his hands outwards
d. Sit down with raised hands
Answer- Spread his hands outwards
Que- A sphere rolls down on two inclined planes of different angles but same height, it does so
a. In the same time
b. With the same speed
c. In the same time with the same speed
d. In the same time with the same kinetic energy
Answer- With the same speed
Que- If a body moves with a constant speed in a circle
a. No work is done on it
b. No force acts on it
c. No acceleration is produced in it
d. Its velocity remains constant
Answer- Its velocity remains constant
Que- Which of the following is arranged in order of decreasing conductivity?
a. Copper, Aluminium, Steel, Silver
b. Aluminium, Silver, Copper, Steel
c. Copper, Silver, Aluminium, Steel
d. Silver, Copper, Aluminium, Steel
Answer- Silver, Copper, Aluminium, Steel
Que- Every hot object emits ________
a. X–rays
b. Visible light
c. Infrared rays
d. Ultraviolet rays
Answer- Infrared rays
Que- Which metal is the best conductor of heat?
a. Silver
b. Gold
c. Copper
d. All of the above
Answer- Copper
Que- When hot liquid is poured into a thick glass tumbler, it cracks because glass :
a. Is a bad conductor of heat so only inner surface expands
b. Has high temperature coefficient of expansion
c. Has a very low specific heat
d. Has low temperature coefficient of expansion
Answer- Is a bad conductor of heat so only inner surface expands
Que- Mud houses are cooler in summers and warmer in winters as compared to brick houses because
a. Mud is a good conductor
b. Mud is a bad conductor
c. Mud is a poor insulator
d. Evaporation of water causes cooling in summers and sunlight coming through holes causes warming in winters
Answer- Mud is a bad conductor
Que- Which of the following is an example of simple harmonic motion?
a. Earth spinning on its axis
b. Simple pendulum motion
c. Ball bouncing on floor
d. Motion of a ceiling fan
Answer- Simple pendulum motion
Que- Boyle's law is a relationship between
a. Pressure and volume
b. Volume and temperature
c. Volume and density
d. Pressure and temperature
Answer- Pressure and volume
Que- Which of the metals has the maximum thermal conductivity?
a. Iron
b. Aluminium
c. Silver
d. Copper
Answer- Silver
Que- Which law relates to the ideal gas law?
a. P1T1 = P2T2
b. P1/V1 = P2/V2
c. P1V1 = P2V2
d. T1/V1 = T2/V2
Answer- P1V1 = P2V2
Que- A solid ball of metal has a spherical cavity inside it. When the ball is heated the volume of the cavity will
a. Increase
b. Decrease
c. Remain unaffected
d. Have its shape changed
Answer- Increase
Que- If a band is played on the moon the sound will
a. Reverberate
b. Be heard by us faintly
c. Be heard upto 10km from it
d. Not be heard at any distance at all from it
Answer- Not be heard at any distance at all from it
Que- The shape of our milky way galaxy is
a. Circular
b. Elliptical
c. Spiral
d. None of the above
Answer- Spiral
Que- The colours of stars depend on their
a. Temperature
b. Distance
c. Radius
d. Atmospheric pressure
Answer- Temperature
Que- The substance which conducts current in the solid state is
a. Diamond
b. Graphite
c. Iodine
d. Sodium chloride
Answer- Graphite
Que- Electric current is measured by which instrument?
a. Voltmeter
b. Ammeter
c. Barometer
d. Sinometer
Answer- Ammeter
Que- The rotational effect of a force on a body about an axis of rotation is described in terms of
a. Centre of gravity
b. Centripetal force
c. Centrifugal force
d. Moment of force
Answer- Moment of force
Que- At hill stations, the boiling point of water will be
a. Same as at sea level
b. Less than that at sea level
c. More than that at sea level
d. Equal to the melting point of ice
Answer- Less than that at sea level
Que- Instrument used to measure the force and velocity of the wind is
a. Ammeter
b. Anemometer
c. Altimeter
d. Audiometer
Answer- Anemometer
Que- When pressure is increased the melting point of ice
a. Increases
b. Does not change
c. Decreases
d. Depends on the impurities in the ice
Answer- Decreases
Que- The wall of a dam is made thicker at the bottom than at the top because the pressure exerted by the water on the wall
a. Depends on the thickness of the wall
b. Increases with height of the wall
c. Increases with depth of the wall
d. Depends on the area of the wall
Answer- Increases with depth of the wall
Que- Sending a frame to a group of stations is known as
a. Single casting
b. Spreading
c. Multicasting
d. Casting
Answer- Multicasting
Que- What is the full form of ''AM' regarding radio broadcasting?
a. Amplitude Movement
b. Anywhere Movement
c. Amplitude Matching
d. Amplitude Modulation
Answer- Amplitude Modulation
Que- Radio waves sent out by a radio stations are reflected by
a. Troposphere
b. Stratosphere
c. Mesosphere
d. Ionosphere
Answer- Ionosphere
Que- Bandwidth is the
a. A measure of the width of a range of frequencies
b. The rate of data transfer
c. Both a & b
d. None of the above
Answer- Both a & b
Que- Negative feedback in amplifiers
a. Increases bandwidth and decreases noise
b. Decreases bandwidth and decreases noise
c. Increases bandwidth and increases noise
d. Decreases bandwidth and increases noise
Answer- Increases bandwidth and decreases noise
Que- A concave lens always forms an image which is
a. Real and erect
b. Virtual and erect
c. Real and inverted
d. Virtual and inverted
Answer- Virtual and erect
Que- Which one of the following determines the sharpness of image in a camera ?
a. The aperture
b. The exposure time
c. The focal length of the lens
d. Size of the camera
Answer- The aperture
Que- Dioptre is the unit of
a. Power of a lens
b. Focal length of a lens
c. Light intensity
d. Sound intensity
Answer- Power of a lens
Que- The part of the eye having the largest refractive index is :
a. Cornea
b. Aqueous humor
c. Lens
d. Vitreous humor
Answer- Lens
Que- Vehicles use ________ to see the objects coming from behind.
a. Concave lens
b. Convex lens
c. Convex mirror
d. Concave mirror
Answer- Convex lens
Que- Sound following a flash of lightning is called
a. Stoning
b. Bolting
c. Thunder
d. Cloud clash
Answer- Thunder
Que- Acceptable noise level for human ear
a. > 85 db
b. = 85 db
c. < 85 db
d. None of the above
Answer- < 85 db
Que- Decibel is a term connected with :
a. Air
b. Water
c. Sound
d. Soil
Answer- Sound
Que- Decibel is the unit used for
a. Speed of light
b. Intensity of heat
c. Intensity of sound
d. Radio wave frequency
Answer- Intensity of sound
Que- The speed of sound in air depends on
a. Frequency
b. Temperature
c. Wavelength
d. None of the Above
Answer- Temperature
Que- A tank filled partially with a liquid is subjected to a uniform horizontal acceleration. Which of the following is true for the surface of liquid in the tank?
a. The liquid surface falls down on the direction of motion and rises up on the back side of the tank
b. The liquid surface falls down only at the center of the tank
c. The surface of the liquid remains horizontal
d. None
Answer- The liquid surface falls down on the direction of motion and rises up on the back side of the tank
Que- The lift of an aeroplane is caused by
a. Law of gravitation
b. Theorem of continuity
c. Pascel's law
d. Bernouli's theorem
Answer- Bernouli's theorem
Que- Which of the following instrument is used to measure Soil Water Tension?
a. Photometer
b. Pyrometer
c. Psychrometer
d. Tensiometer
Answer- Tensiometer
Que- Blotting paper absorbs ink due to
a. Capillary action phenomenon
b. Diffusion of ink through the blotting
c. Siphon action
d. Viscosity of ink
Answer- Capillary action phenomenon
Que- Name the process by which bubbles from liquid are formed?
a. Effervescence
b. Surface Tension
c. Surface Energy
d. Degasification
Answer- Effervescence
Que- The distance between node and adjacent antinode is 30 cm. The wavelength is
a. 30 cm.
b. 90 cm.
c. 120 cm.
d. 60 cm.
Answer- 60 cm.
Que- The material used in the fabrication of a transistor is
a. Aluminium
b. Copper
c. Silicon
d. Silver
Answer- Silicon
Que- For which Diode is used ?
a. Modulation
b. Oscillation
c. Amplification
d. Purification
Answer- Purification
Que- The complete form of 'IC' in electronics is
a. Internal circuit
b. Independent circuit
c. Integrated circuit
d. Inbuilt circuit
Answer- Integrated circuit
Que- In electronics what comes under tank circuit ?
a. Resistance and capacity
b. Resistance and inductance
c. Capacity and inductance
d. Resistance, capacity and inductance
Answer- Capacity and inductance
Que- Why does ice covered in sawdust not melt quickly ?
a. Sawdust does not allow the air to touch the ice
b. The water is absorbed by sawdust
c. Sawdust is a bad conductor of heat
d. Sawdust is good conductor of heat
Answer- Sawdust is a bad conductor of heat
Que- Ice is packed in saw dust because
a. Saw dust will not get melted easily.
b. Saw dust is poor conductor of heat.
c. Saw dust is a good conductor of heat.
d. Saw dust does not stick to the ice.
Answer- Saw dust is poor conductor of heat.
Que- In general, which is the cause of a sea breeze?
a. Pressure
b. Specific heat
c. Heat
d. All the above
Answer- Specific heat
Que- Outside of cooking utensils are generally left black from below because
a. It is difficult to clean daily.
b. Black surface is a good conductor of heat.
c. Black surface is a poor conductor of heat.
d. Black surface is a good absorber of heat.
Answer- Black surface is a good absorber of heat.
Que- Heat transfer by radiation mainly depends upon
a. Kind and extent of its surface
b. Its temperature
c. Nature of the body
d. All of the above
Answer- All of the above
Que- The energy emitted by the Sun is due to
a. Chemical reaction
b. Nuclear fission
c. Nuclear fusion
d. All of the above
Answer- Nuclear fusion
Que- Where does hydroelectric energy come from?
a. Air
b. Water
c. Solar
d. All of the above
Answer- Water
Que- Which colour has the highest energy?
a. Violet
b. Red
c. Blue
d. White
Answer- Violet
Que- Red is used as an emergency or danger signal as
a. It is a striking colour
b. Its wavelength is the longest
c. It is scattered
d. It has very high energy
Answer- Its wavelength is the longest
Que- Which of these travels in glass with minimum velocity ?
a. Red light
b. Violet light
c. Green light
d. Yellow light
Answer- Violet light
Que- A body falling through a liquid acquires a steady velocity is known as
a. End velocity
b. Touch down velocity
c. Terminal velocity
d. Steady state velocity
Answer- Terminal velocity
Que- The spoon dropped by an astronaut in a satellite will
a. Fall to the floor
b. Remain stationary
c. Continue to follow the motion of the satellite
d. Move tangentially away
Answer- Continue to follow the motion of the satellite
Que- An aircraft can perform aerobatic manoeuvres in a vertical loop because of
a. Gravity
b. Centripetal force
c. Weight
d. Centrifugal force
Answer- Gravity
Que- Which one is not a part of Kepler's Law?
a. Law of orbits
b. Law of areas
c. Law of speed
d. Law of periods
Answer- Law of speed
Que- Kepler's law of planetary motion states that the square of the time period is proportional to the
a. Semi-major axis
b. Square of the semi-major axis
c. Cube of the semi-major axis
d. Fourth power of the semi-major axis
Answer- Cube of the semi-major axis
Que- Which of the following is a device designed to protect electrical devices from voltage spikes?
a. Voltage unloader
b. Surge protector
c. Heat protector
d. Current unloader
Answer- Surge protector
Que- The working of the quartz crystal in the watch is based on the
a. Piezo - electric Effect
b. Edison Effect
c. Photoelectric Effect
d. Johnson Effect
Answer- Piezo - electric Effect
Que- At low temperature, Lead behaves as a :
a. Semi conductor
b. Superconductor
c. Insulator
d. Conductor
Answer- Superconductor
Que- The device which transfer the signal from low resistance region to high resistance region is
a. Diode
b. Transistor
c. Capacitor
d. Inductor
Answer- Transistor
Que- The frequency of direct current is ________
a. Zero
b. 50 HZ
c. 60 HZ
d. 100 HZ
Answer- Zero
Que- Out of the following pairs, choose the pair in which the physical quantities do not have identical dimension?
a. Pressure and Young's modules
b. Planck's constant and Angular momentum
c. Impulse and moment of force
d. Force and rate of change of linear momentum
Answer- Impulse and moment of force
Que- If two bodies of different masses, initially at rest, are acted upon by the same force for the same time, then the both bodies acquire the same:
a. Velocity
b. Momentum
c. Acceleration
d. Kinetic energy
Answer- Momentum
Que- Pick out the scalar quantity
a. Force
b. Pressure
c. Velocity
d. Acceleration
Answer- Pressure
Que- Rectifiers are used to convert:
a. Direct current to Alternating current
b. Alternating current to Direct current
c. High voltage to low voltage
d. Low voltage to high voltage
Answer- Alternating current to Direct current
Que- Out of the following, which is not emitted by radioactive substance?
a. Electrons
b. Electromagnetic radiations
c. Alpha particles
d. Neutrons
Answer- Neutrons
Que- The domain theory of magnetism applies to
a. Aluminium
b. Copper
c. Silver
d. Cobalt
Answer- Cobalt
Que- The paramagnetic theory of magnetism applies to
a. Nickel
b. Mercury
c. Iron
d. Platinum
Answer- Platinum
Que- Where should a boat compass be mounted?
a. Near magnet
b. Near iron
c. Away from electrical wiring
d. All the above
Answer- Away from electrical wiring