Que- Which of the following parts of the sunlight makes the solar cooker hot ?
a. Ultra violet
b. Red light
c. Infra red
d. Cosmic rays
Answer- Infra red
Que- In the atmosphere ultraviolet rays are absorbed by
a. Oxygen
b. Nitrogen
c. Ozone
d. Helium
Answer- Oxygen
Que- Energy of Ultraviolet rays is great than
a. Infrared rays
b. Gamma rays
c. X-rays
d. Cosmic rays
Answer- Infrared rays
Que- What is the reason for twinkling of stars ?
a. Dispersion of light
b. Total internal reflection
c. Atmospheric reflection
d. Atmospheric refraction
Answer- Atmospheric refraction
Que- The basic reason for the extraordinary sparkle of suitably cut diamond is that
a. It has well defined cleavage planes
b. It has a very high transparency
c. It has a very high refractive index
d. It is very hard
Answer- It has a very high refractive index
Que- Refractive Index of glass with respect to water is
a. 4/3
b. 9/8
c. 2/3
d. 8/9
Answer- 9/8
Que- Which of the following colour of light deviates least through the prism?
a. Yellow
b. Green
c. Violet
d. Red
Answer- Red
Que- Bending of light rays in denser medium is termed as:
a. Reflection
b. Dispersion
c. Refraction
d. Deflection
Answer- Refraction
Que- Fibre optics work on the principle of
a. Scattering of light
b. Total internal absorption
c. Total internal reflection
d. Optical rotation
Answer- Total internal reflection
Que- What is colour of light related to ?
a. Amplitude
b. Frequency
c. Quality
d. Velocity
Answer- Amplitude
Que- The redness in atmosphere at Sunrise and Sunset is due to :
a. Refraction of light
b. Reflection of light
c. Dispersion of light
d. Scattering of light
Answer- Scattering of light
Que- The sky appears blue due to
a. Rayleigh scattering
b. Mie scattering
c. Back scattering
d. None of the above
Answer- Rayleigh scattering
Que- What is a compound microscope?
a. A microscope that has one lens.
b. A microscope that has two sets of lenses : an occular lens and an eyepiece.
c. A microscope whose lenses are concave.
d. A microscope whose lenses are convex.
Answer- A microscope that has two sets of lenses : an occular lens and an eyepiece.
Que- Stars appears to move from east to west because
a. All stars move from east to west
b. The earth rotates from west to east
c. The earth rotates from east to west
d. The background of the stars moves from west to east
Answer- The earth rotates from west to east
Que- Pa(Pascal) is the unit for
a. Thrust
b. Pressure
c. Frequency
d. Conductivity
Answer- Pressure
Que- Planets do not twinkle because
a. They emit light of a constant intensity
b. Their distance from the earth does not change with time
c. They are very far away from the earth resulting in decrease in intensity of light
d. They are nearer to earth and hence we receive a greater amount of light.
Answer- They are nearer to earth and hence we receive a greater amount of light.
Que- Metals are good conductors of electricity because:
a. They contain free electrons.
b. The atoms are lightly packed.
c. They have high melting point.
d. All of the above.
Answer- They contain free electrons.
Que- Let a thin capillary tube be replaced with another tube of insufficient length then, we find water
a. will overflow
b. will not rise
c. depressed
d. change its meniscus
Answer- will not rise
Que- A potentiometer wire is 100 cm long and a constant potential difference is maintained across it. Two cells are connected in series first to support one another and then in opposite direction. The balance points are obtained at 50 cm and 10 cm from the positive end of the wire in the two cases. The ratio of the emf's is :
a. 3:4
b. 5:4
c. 5:1
d. 3:2
Answer- 3:2
Que- Suppose voltage V is applied across a resistance R. The power dissipated in the resistance is P. Now the same voltage V is applied across a parallel combination of three equal resistors each of resistance R. Then the power dissipated in the second case will be
a. P
b. 3P
c. P/3
d. 2p/ 3
Answer- 3P
Que- A galvanometer can be converted into a voltmeter by connecting with it a
a. High resistance in parallel
b. Low resistance on parallel
c. High resistance on series
d. Low resistance in series
Answer- High resistance on series
Que- In superconductors, the energy gap is due to
a. Electron-electron interaction
b. Electron-phonon interaction
c. Phonon-phonon interaction
d. Electron-photon intercation
Answer- Electron-phonon interaction
Que- Electrical Pressure is also called
a. Current
b. Voltage
c. Resistance
d. Power
Answer- Voltage
Que- Ball pen functions on the principle of :
a. Viscosity
b. Boyle's Law
c. Gravitational force
d. Surface tension
Answer- Surface tension
Que- When a detergent is added to pure water, its surface tension
a. Increases
b. Decreases
c. Remains constant
d. Becomes infinite
Answer- Decreases
Que- Pieces of camphor placed on water move about rapidly. This is because of
a. Diffusion
b. Viscosity
c. Surface tension
d. Capillarity
Answer- Surface tension
Que- What is unit of Viscosity ?
a. Coulomb
b. Newton second per square meter
c. Watt per meter per degree celcius
d. Joule per kilogram per Kelvin
Answer- Newton second per square meter
Que- The hair of shaving brush clings together when removed from water due to
a. Surface tension
b. Viscosity
c. Elasticity
d. Friction
Answer- Surface tension
Que- The SI unit of Heat is________?
a. Watt
b. Volt
c. Joule
d. Newton
Answer- Joule
Que- Two automobiles are 150 kilometers apart and traveling toward each other. One automobile is moving at 60km/h and the other is moving at 40km/h mph. In how many hours will they meet?
a. 2.5
b. 2.0
c. 1.75
d. 1.5
Answer- 1.5
Que- The branch of science which deals with the properties of matter and energy is called__________?
a. Biology
b. Geography
c. Physics
d. Chemistry
Answer- Physics
Que- Physics is one of the branches of___________?
a. Physical sciences
b. Biological sciences
c. Social science
d. Life sciences branch
Answer- Physical sciences
Que- Which branch of science plays an important role in engineering?
a. Biology
b. Chemistry
c. Physics
d. All of these
Answer- Physics
Que- The most fundamental of all sciences which provides basic principles and fundamental laws to other branches of science is_________?
a. biology
b. physics
c. information technology
d. chemistry
Answer- physics
Que- The Branch of Physics deals with highly energetic ions is called__________?
a. Elementary articles
b. Article physics
c. Ionic physics
d. Plasma physics
Answer- Plasma physics
Que- The__________branch of Physics deals with nuclear particles such as neutrons, protons and nuclear?
a. Solid State Physics
b. Plasma Physics
c. structure is called
d. Nuclear Physics
Answer- Nuclear Physics
Que- The branch of Physics which deals with properties of gravitational?
a. Field theory
b. Acoustics
c. Hydro dynamic
d. Optics
Answer- Field theory
Que- The branch of physics which deals with the living things is called_________?
a. biological sciences
b. physical sciences
c. cell systems
d. elementary physics
Answer- biological sciences
Que- The physics of moving charge particles is known as__________?
a. Plasma physics
b. Electro-static's
c. Electro-magnetic
d. Electro-dynamics
Answer- Electro-dynamics
Que- Study of living science relates with________?
a. Physical science
b. Biological science
c. Just living science
d. Organ science
Answer- Biological science
Que- The first book of Physics was written by__________?
a. Kelvin
b. Newton
c. Aristotle
d. Faraday
Answer- Aristotle
Que- Which one of the following is massless? 2
a. Proton
b. Electron
c. Neutron
d. Photon Read More Details about this Mcq
Answer- Photon
Que- Name the branch of science which deals with the study of sound and sound waves?
a. Aeronautics
b. Acoustics
c. Aerostatics
d. Aetiology
Answer- Acoustics
Que- The formula of inter-conversion of centigrade and Fahrenheit scale is___________?
a. c-32/9
b. f -32/9 =c/5
c. f-32/9=c/9
d. none
Answer- f -32/9 =c/5
Que- The co efficient of linear expansion is equal to__________?
a. ΔL = αLΔT
b. ΔL/LΔT
c. LΔT/ΔL
d. αLΔT-ΔL
Answer- ΔL = αLΔT
Que- The unit of coefficient of linear expansion or volume expansion is__________?
a. K
b. K-1
c. K -2
d. none
Answer- K-1
Que- linear expansion occurs in_________?
a. solid
b. liquid
c. both
d. none
Answer- solid
Que- When body is in motion, ____________ always changes?
a. its velocity
b. its acceleration
c. its position vector
d. its momentum
Answer- its position vector
Que- A man is in a car is moving with velocity of 36km/hr. His speed with repect to the car is ____________________?
a. 10m/s
b. 36m/s
c. zero
d. infinite
Answer- zero
Que- Area under velocity time graph represent_____________________?
a. force
b. displacement
c. distance
d. acceleration
Answer- displacement
Que- Instantaneous and average velocities become equal when body___________________?
a. has zero acceleration
b. has uniform acceleration
c. has variable acceleration
d. moves in a circle
Answer- has zero acceleration
Que- Inertia of an object is quantitative measure of its__________________?
a. volume
b. density
c. mass
d. temperature
Answer- mass
Que- 1st law of motion gives the definition of _________________________?
a. rest
b. motion
c. velocity
d. force
Answer- force
Que- 3rd law of motion explains______________________?
a. effect of force
b. existence of a force
c. existence of two forces
d. existence of pair of forces in nature
Answer- existence of pair of forces in nature
Que- The dimension of force is____________________?
a. MLT-2
b. ML2T-2
c. ML2T2
d. ML-2T-2
Answer- MLT-2
Que- Which of the following pair has same direction always ?
a. force, displacement
b. force, velocity
c. force, acceleration
d. force, momentum
Answer- force, acceleration
Que- The collision between two bodies be elastic if bodies are_________________?
a. solid and soft
b. soft and elastic
c. solid and hard
d. hard and elastic
Answer- solid and hard
Que- When car takes turn around a curve road, the passengers feel a force acting on them in a direction away from the center of the curve. It is due to__________________?
a. Centripetal force
b. Gravitational force
c. Their inertia
d. Centrifugal force
Answer- Centrifugal force
Que- What is the shape of velocity, time graph for constant acceleration ?
a. straight inclined line.
b. parabola
c. inclined curve
d. declined curve
Answer- straight inclined line.
Que- Which shows the correct relation between time of flight T and maximum height H ?
a. H=gT2/8
b. H=8T2/g
c. H=8g/T2
d. H=gT2
Answer- H=gT2/8
Que- Taking off rocket can be explained by __________________?
a. 1st law of motion
b. 2nd law of motion
c. Law of conservation of momentum
d. law of conservation of energy
Answer- Law of conservation of momentum
Que- What is the angle of projection for which the range and maximum height become equal ?
a. tan-1 ¼
b. tan-1 4
c. tan-1 ½
d. tan-1 2
Answer- tan-1 4
Que- Distance covered by a freely falling body in 2 seconds will be__________________?
a. 4.9 m
b. 19.6 m
c. 39.2 m
d. 44.1 m
Answer- 19.6 m
Que- Flight of a rocket in the space is an example of______________________?
a. second law of motion
b. third law of motion
c. first law of motion
d. law of gravitation
Answer- third law of motion
Que- At which angle the range of the projectile is maximum____________________?
a. 45
b. 60
c. 30
d. none
Answer- 45
Que- Time rate of change of momentum is equal to____________________?
a. force
b. impulse
c. velocity
d. both A and C
Answer- force
Que- Why Ballistic missile fails in some circumstances of precision ?
a. due to their shape
b. due to air resistance
c. due to angle of projection
d. all of these
Answer- due to air resistance
Que- A body is moving with uniform velocity. Its______________________?
a. speed changes
b. acceleration changes
c. direction of motion changes
d. displacement from origin changes
Answer- displacement from origin changes
Que- When velocity time graph is a straight line parallel to time axis then__________________?
a. acceleration is const
b. acceleration is variable
c. acceleration is zero
d. velocity is zero
Answer- acceleration is zero
Que- Slope of velocity time graph is_____________________?
a. acceleration
b. distance
c. force
d. momentum
Answer- acceleration
Que- Which law of motion is also called law of inertia ?
a. 1st law
b. 2nd law
c. 3rd law
d. all 1st, 2nd and 3rd laws
Answer- 1st law
Que- Newtons laws do not hold good for particles_______________?
a. at rest
b. moving slowly
c. move with high velocity
d. move with velocity comparable to velocity of light
Answer- move with velocity comparable to velocity of light
Que- 2nd law of motion gives the definition of________________?
a. force
b. acceleration
c. velocity
d. both force and acceleration
Answer- acceleration
Que- Momentum depends upon__________________?
a. force acts on the body
b. mass of the body
c. velocity of the body
d. both mass and velocity of the body
Answer- both mass and velocity of the body
Que- When a body moves in a straight line then its displacement coincides with__________________?
a. distance
b. force
c. acceleration is zero
d. both A and B
Answer- distance
Que- Motorcycle safety helmet extends the time of collision hence decreasing the________________?
a. chance of collision
b. force acting
c. velocity
d. impulse
Answer- impulse
Que- During long jump, athlete runs before taking the jump. By doing so he__________________?
a. provide him a larger inertia
b. decreases his inertia
c. decreases his momentum
d. increases his momentum
Answer- increases his momentum
Que- A body is falling freely under gravity. How much distance it falls during an interval of time between 1st and 2nd seconds of its motion, taking g=10 ?
a. 14 m
b. 20 m
c. 5 m
d. 25 m
Answer- 14 m
Que- When collision between the bodies in a system is inelastic in nature then for system ____________________?
a. momentum changes but K.E remain conserve
b. K.E changes but momentum remain conserve
c. both momentum and K.E changes
d. both momentum and K.E remain conserve
Answer- K.E changes but momentum remain conserve
Que- The acceleration in the rocket at any instant is proportional to the nth power of the velocity of the expelled gases. Where the value of n must be ?
a. -1
b. 1
c. 2
d. -2
Answer- 1
Que- Which of the following is not an example of projectile motion ?
a. a gas filled ballon
b. bullet fired from gun
c. a football kicked
d. a base ball shot
Answer- a gas filled ballon
Que- The thrust on the rocket in the absence of gravitational force of attraction is__________________?
a. Constant
b. not constant
c. constant if the rate of ejected gases is constant
d. constant for short range rocket.
Answer- Constant
Que- When two bodies move toward each other with constant speeds the distance between them decreases at the rate of 6m / sec. If they move in the same direction the distance between them increases at the rate of 4m/sec. Then their speeds are________________?
a. 5m/s, 1m/s
b. 3m/s, 3m/s
c. 6m/s, 1m/s
d. 4m/s, 2m/s
Answer- 5m/s, 1m/s
Que- The distance covered by a body in time t starting from rest is__________________?
a. at2/2
b. Vt
c. a2t/2
d. at2
Answer- at2/2
Que- The trajectory (or path) of a projectile is_________________?
a. straight line
b. parabola
c. hyperbola
d. circle
Answer- parabola
Que- The force beared by a wall on which water strikes normally at a speed of 10m/sec and at a discharge of 0.0001m3/sec is__________________?
a. 1 N
b. 10 N
c. 100 N
d. none
Answer- 1 N
Que- The range of the projectile at 30 deg and 60 deg are__________________?
a. equal to 45 deg
b. equal to 90 deg
c. equal to each other
d. none of the above
Answer- equal to each other
Que- Waves transmit ________________ from one place to another?
a. energy
b. mass
c. both
d. none
Answer- energy
Que- The distance between any two consecutive crests or troughs is called____________________?
a. frequency
b. period
c. Wave length
d. phase difference
Answer- Wave length
Que- In vibrating cord the points where the amplitude is maximum, are called ___________________?
a. antinodes
b. nodes
c. troughs
d. crests
Answer- antinodes
Que- A stationary wave is set up in the air column of a closed pipe. At the closes end of the pipe _____________________?
a. always an node in formed
b. always an antinode is formed
c. neither node nor antinode is formed
d. sometimes a node and sometimes an antinode is formed
Answer- always an node in formed
Que- According to Newton sound travel in air under the conditions of_____________________?
a. adiabatic
b. isothermal
c. isobaric
d. isochoric
Answer- isobaric
Que- Velocity of sound in vacuum is ____________________?
a. 332 ms-1
b. 320 ms-1
c. Zero
d. 224 ms-1
Answer- Zero
Que- The velocity of sound is greatest in___________________?
a. Water
b. air
c. copper
d. ammonia
Answer- copper
Que- The velocity of sound in air would become double than its velocity at 0°C at temperature ?
a. 313°C
b. 586°C
c. 819°C
d. 1172°C
Answer- 819°C
Que- Ultrasonic have__________________?
a. frequency in the audible range
b. frequency is greater than 20 kHz
c. frequency lower than 20 Hz
d. all of above
Answer- frequency is greater than 20 kHz
Que- The number of beats produced per second is equal to____________________?
a. the sum of the frequencies of two tuning forks
b. the difference of the frequencies of two tuning forks
c. the ratio of the frequencies of two tuning forks
d. the frequency of either of the two tuning forks
Answer- the difference of the frequencies of two tuning forks
Que- Silence zone takes place due to____________________?
a. constructive interference
b. destructive interference
c. beats
d. resonance
Answer- destructive interference
Que- When the source of sound moves away form a stationary listener then ______________ occurs?
a. an apparent increase in frequency
b. an apparent decrease in frequency
c. an apparent decrease in wavelength
d. no apparent change in frequency
Answer- an apparent decrease in frequency
Que- Which one is the correct relation for fundamental frequency of open and closed pipe ?
a. fopen = 2 fclosed
b. fclosed = 2fopen
c. fopen = fclosed
d. fopen = 1 / f closed
Answer- fopen = 2 fclosed