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Syllabus – General Knowledge / General Studies – Click here – download

Syllabus – Physics – Click here – download

**Test Series **– **Click here to join**

**Q: 1 The dimensions of volume are**

- M
^{0}L^{2}T^{0} - M
^{0}L^{3}T^{-1} - M
^{0}L^{3}T^{0} - M
^{1 }L^{3}T^{1}

**Q: 2 The dimensional formula ML ^{2} T^{-2} represents**

- the moment of a force
- acceleration
- force
- momentum

**Q: 3 Which of the following pairs of physical quantities have the same dimensions?**

- momentum and impulse
- energy and surface energy
- momentum and angular momentum
- force and surface tension

**Q: 4 Dimensional analysis can be used in deducing the exact relationship between any number of physical quantities**

- True
- False
- Uncertain
- none of these

**Q: 5 The M.K.S unit of energy is**

- Dyne/sec
- Joule
- erg
- none of these

**Q: 6 In S.I. system Pascal is a unit of**

- surface tension
- surface energy
- Viscosity
- velocity

**Q: 7 In the Bernoulli’s theory the term 1/2 pv ^{2} and pg^{x} process the same unit as of**

- pressure
- force
- impulse
- strain

**Q: 8 Watt-sec is a unit of**

- momentum
- force
- energy
- power

**Q: 9 The unit of current density is**

- ampere metre
^{2} - ampere/metre
- weber/metre
^{2} - ampere/metre
^{2}

**Q: 10 One Pascal in SI is equal to**

- one Newton metre
- one Newton metre
^{-1} - one Newton metre
^{-2} - one dyne cm
^{2}

**Q: 11 One big advantage of the atomic standards of length and time is that**

- they are of human size
- they can be measured with simple equipment
- they are natural units
- they can be duplicated anywhere

**Q: 12 The correct unit of power is**

- Kilowatt
- Dynes
- joule
- Kilowatt-hour

**Q: 13 One Fermi is equal to (in SI)**

- 10
^{-12}farad - 10
^{-6}Henry - 10
^{-12}metre - 10
^{-12}Angstrom

**Q: 14 Out of the followings which is not a characteristic of the fundamental units?**

- they are well defined
- they are easily reproductive
- they are not related to each other
- they do not change with change of conditions as temperature, state of motion, pressure etc.

**Q: 15 In S.I System, the correct unit of pressure is**

- Atmosphere
- Pascal
- Dynes per square cm
- mm of mercury

**Q: 16 Choose the physical quantity which is not defined in terms of force per unit area**

- pressure
- stress
- strain
- young’s modulus

**Q: 17 A pressures of 10 ^{6} dynes/cm^{2} in C.G.S. is equivalent to … in M.K.S.**

- 10
^{5}N/m^{2} - 10
^{4}N/m^{2} - 10
^{6}N/m^{2} - 10
^{3}N/m^{2}

**Q: 18 Given the density of wood is 0.5 gm per c.c. in the C.G.S. system of units. Its value in MKS units is given by**

- 500
- 50
- 0.5
- 5,000

**Q: 19 Which of the following is dimensionally correct?**

- Pressure = Energy per unit area
- Pressure = Energy per unit volume
- Pressure = Force per unit volume
- Pressure = momentum per unit volume per unit time

**Q: 20 Which of the following pairs of physical quantities have identical dimensions?**

- Moment of a force and Angular Momentum
- work and Energy
- Torque and Energy
- None of these

**Q: 21 The quantity e ^{2}/hc, where ‘e’ is the electronic charge ‘h’ is the Planck’s constant and ‘c’ is the velocity of light**

- has the dimension of mass
- has the dimension of length
- has the dimension of time
- is dimensionless

**Q: 22 If the velocity of light c, the constant of gravitation G and Planck’s constant have chosen as fundamental units , the dimensions of length in the new system is**

- C
^{-3/2}G^{1/2}h - C
^{-1/2}G^{-1/2}h - C
^{-5/2}h - none of these

**Q: 23 State the physical quantity represented by L ^{2} T^{2} 0^{-1} where 0 is represents the unit temperature**

- Thermal capacity of the body
- Thermal conductivity
- Specific thermal capacity
- specific latent heat of vaporization

**Q: 24 Correct unit of capacitance in SI system is**

- nf
- pf
- f
- uf

**Q: 25 The correct unit of inductance in SI system is**

- lx
- lm
- H
- wb

**Q: 26 The correct unit of magnetic flux in SI system is**

- Lumen
- Tesla(T)
- Henry(H)
- Weber(wb)

**Q: 27 The correct unit of illuinance in SI system is**

- Lumen
- Candela
- lux
- weber

**Q: 28 In SI system the unit of specific heat capacity is**

- gm cm
^{2}Sec^{-1} - J.kg
^{-1}.K^{-1} - W.m
^{-1}K^{-1} - W.sr
^{-1}

**Q: 29 In SI system the correct unit of mass is**

- Ton
- kg
- g
- mg

**Q: 30 In SI system the correct unit of luminous intensity is**

- Kelvin
- Lumen
- Lux
- Candela

**Q: 31 In SI system the correct unit of amount of substance is**

- Litre
- Mole
- Millilitre
- Gram

**Q: 32 The correct unit of electric current in SI system is**

- Ampere
- Ampere/sec
- Coulomb/sec
- Coulomb/meter

**Q: 33 The correct unit of Kinematic viscosity in SI system is**

- rad.s
^{-2} - m
^{2}.s^{-1} - g.s
^{-2} - N.sm
^{-2}

**Q: 34 The correct unit of dynamic Viscosity in SI system is**

- rad.s
^{-2} - gs
^{-2} - N.sm
^{-2} - m
^{2}.s^{-1}

**Q: 35 The correct unit of magnetic flux density in SI system is**

- Henry
- Weber
- Tesla
- Lumen

**Q: 36 SI Supplementary unit of solid angle is**

- Degree
- Steradian
- Radian
- Grade

**Q: 37 Supplementary unit of plane angle is**

- Grade
- Degree
- Radian
- Steradian

**Q: 38 One horse power is equal to how many watts?**

- 523
- 816
- 749
- 719

**Q: 39 Which one of the following quantities has no unit?**

- Stress
- Strain
- Viscosity
- Surface tension

**Q: 40 In SI system volt per meter is the unit of**

- Electric field
- Electric field strength
- potential
- potential difference

**Q: 41 In SI system, Ohm is the unit of**

- Inductance
- Electric resistance
- Resistivity
- Conductance

**Q: 42 The unit of energy is**

- J/s
- watt-day
- kilowatt
- g cm/s

**Q: 43 A light year is the unit of**

- speed
- energy
- time
- distance

**Q: 44 M.K.S. unit of pressure**

- atmosphere
- dynes per sq.com
- meter
- Pascal

**Q: 45 which one of the following is a scalar quantity?**

- Mass
- Time
- volume
- all the above

**Q: 46 Which one of the following is a vector quantity?**

- velocity
- acceleration
- force
- all the above

**Q: 47 Initial velocity of a body moving with uniform acceleration of 5ft./Sec. is 10ft./sec. What will be the distance traversed in 10 seconds?**

- 150 ft
- 250 ft
- 350 ft
- 450 ft

**Q: 48 The first law of motion supplies the definition of**

- force
- velocity
- acceleration
- momentum

**Q: 49 A man is at rest in the middle of and on perfectly frictionless ice. He can get himself to the shore by taking the help of Newton’s**

- I law
- II law
- III law
- all the above

**Q: 50 The action and reaction forces referred in Newton’s third law of motion**

- must act upon the same body
- must act upon different bodies
- need not to be equal in magnitude but must have the same line of action
- must be equal in magnitude but need not have the same line of action

**Q: 51 A force of 100 dynes acts on a body of 5 gms for 10 secs. Find the change in momentum.**

- 10 C.G.. Units
- 100 C.G.. Units
- 1000 C.G.. Units
- 10000 C.G.. Units

**Q: 52 We can clean a dirty carpet by beating. This is in accordance with**

- Newton’s first law
- Newton’s second law
- Newton’s third law
- none of the above

**Q: 53 A force of 100 dynes acts on a body of 5 gms for 10 secs. What is the velocity produced?**

- 2 fr/sec
- 20 fr/sec
- 200 fr/sec
- 2000 fr/sec

**Q: 54 Swimming is possible because of which law of motion?**

- second
- first
- third
- none of the above

**Q: 55 A force of 150 dynes acts on a mass of 50 gms for 5 seconds. What is the acceleration produced?**

- 4 cms/sec
^{2} - 9 cms/sec
^{2} - 10c cms/sec
^{2} - none of these

**Q: 56 The direction of the velocity of a body cannot change, when its acceleration is constant. the statement is?**

- true
- false
- uncertain
- none of the above

**Q: 57 What acceleration will a force of 5N impart to a mass of 5 kg?**

- 5 N/kg
- 5M/sec
^{2} - 1M/sec
^{2} - none of the above

**Q: 58 A player caught a cricket ball of mass 150 gm. moving at a rate of 20m/s. If the catching process be completed in 0.1 s. the force of the blow exerted by the ball on the hands is**

- 3000N
- 300N
- 30N
- 30,000N

**Q: 59 When a body is accelerated,**

- its velocity always changes
- its direction always changes
- its speed always changes
- its falls towards the earth

**Q: 60 A force of 100 dynes acts for 10 seconds on a body of mass500g. What is the change in momentum?**

- 100 C.G.S. units
- 10 C.G.S. units
- 1000 C.G.S. units
- 5000 C.G.S. units

**Q: 61 A rope attached to a post in the ground is pulled horizontally with a force of 80 kg. The pole pulls back with a force of**

- 1000 kg
- 80 kg
- 40 kg
- 160 kg

**Q: 62 If a car is to gain momentum, it must**

- lose inertia
- accelerate
- move rapidly
- lose weight

**Q: 63 Which of the following is not accelerated?**

- The moon in its orbit
- a stone in free fall
- a car in which the engine thrust is equal to the friction
- a tennis ball rebounding from the ground

**Q: 64 The algebraic sign of acceleration depends on**

- the choice of direction
- the sign of the final velocity
- whether an object is speeding up or sowing down
- the position of the object

**Q: 65 A car accelerates for 10s at 6 m/s ^{2}. What is its final seed if its initial was 4 m/s?**

- 34 m/s
- 64 m/s
- 60 m/s
- 30 m/s

**Q: 66 Which of the following vector quantities? I. Density II. Acceleration III. Energy IV. Force**

- I only
- I and III
- II and IV
- I, II, III

**Q: 67 We know that forces are vectors because**

- they obey the same mathematical rules that displacement obey
- they are defined in such a way that they are vectors
- they always add to zero
- they have magnitude

**Q: 68 An 800 kgs. Fireman slides down a pole in a fire station. His grip on the pole causes a frictional force of 240 Newton’s opposing his fall. What is the approximate value of his acceleration towards the floor below?**

- 13 m/sec
^{2} - 10 m/sec
^{2} - 18 m/sec
^{2} - 7 m/sec
^{2}

**Q: 69 The minimum number of unequal forces whose vector sum can equal to zero is**

- 2
- 1
- 3
- 4

**Q: 70 A car is traveling due east at 40 miles /hr turns south and maintains the same speed. What is the change in velocity of car?**

- 40 miles /hr east-south
- 400 miles /hr east-south
- 80 miles /hr east-south
- none

**Q: 71 A force of6.0 N acts on a body of mass 1 kg. for some time during which the body attains a velocity of 30 m/s/ The time (in second) for which the force acts on the body is**

- 26
- 6
- 5
- 2

**Q: 72 Forces of 3N, 4N and 12N act at a point in mutually perpendicular direction. The magnitude of the resultant force in Newton is?**

- 13
- 11
- 5
- indeterminate from the information given

**Q: 73 Which of the following is not necessary for work to be done?**

- an applied force
- a force component along the displacement
- a displacement
- a constant speed

**Q: 74 A body at rest may have**

- speed
- momentum
- velocity
- energy

**Q: 75 The weight of a 10 kg block is**

- 98 N
- 9.8 N
- 10 N
- 0.98 N

**Q: 76 A fixed pulleys is employed to**

- do more work with the same force but without using pulley
- change the direction of force
- same work
- have mechanical advantage greater than one

**Q: 77 The static friction is**

- always greater than the dynamic friction
- always less than the dynamic friction
- equal to the dynamic fiction
- sometimes greater and sometimes less than the dynamic friction

**Q: 78 Which is the suitable method to decrease friction?**

- polishing
- ball and roller bearings
- lubrication
- all of the above

**Q: 79 The force of friction that comes into action after the motion has started is known as**

- dynamic friction
- static friction
- friction only
- limiting friction

**Q: 80 Let a disc, a cylinder, a solid sphere, and a ring be rolled down in an inclined plane simultaneously. Which will reach first?**

- disc
- cylinder
- solid sphere
- ring

**Q: 81 Which kind of storage device can be carried around?**

- Floppy disk
- Hard disk
- System cabinet
- Hard disk derive
- Floppy disk drive

**Q: 82 The maximum value of static friction is called**

- rolling friction
- limiting friction
- normal reaction
- coefficient of friction

**Q: 83 A body in equilibrium may not have**

- momentum
- velocity
- acceleration
- kinetic energy

**Q: 84 A body is said to be perfectly elastic if**

- it can freely move
- its surface is perfectly smooth
- it is not affected by external force
- it recovers its original shape/size when the deforming force is removed

**Q: 85 A 30 kg. Block lies on a frictionless table and is connected to a 10 kg block by a rope passing over a frictionless pulley,**

- the acceleration of the 10 kg block is 9.8 m/s
^{2} - both the blocks move with the same velocity
- both the blocks are accelerated by the same magnitude
- the acceleration acting on 10 kg block is zero

**Q: 86 Let us suppose that a block resting on an inclined plane just begins to slide down the plane when the angle of inclination is gradually increased to 30, the coefficient of friction will be equal to**

- tan 30
^{0} - cos 30
^{0} - cot 30
^{0} - sin 30
^{0}

**Q: 87 assuming the pulley to be frictionless and mass less, the smallest coefficient of static friction is 0.33 to cause the cylinder to roll. If for the cylinder M=70kg and radius of gyration 400 mm. then**

- the cylinder will roll down the plane and mass will ascend
- the cylinder will move up and the mass will descend
- the cylinder will move up and the mass will also move up
- none is true

**Q: 88 Which of the following pairs have identical dimensions?**

- work and kinetic energy
- Momentum and force
- Pressure and surface tension
- Momentum of force and angular momentum

**Q: 89 If C is proportional to D, then**

- the product CD is constant
- the ration C/D is constant
- C is smaller than D
- C is larger then D

**Q: 90 With the help of dimensions method it can be proved that frequency of a stretched wire**

- Does not depend on the mass of the wire
- Depends on the displacement of the wire
- Depends on the mass of the wire
- None of these