PHYSICS

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UPSC, PSC, BANK, RAILWAY,etc. Examination Questions

Physics questions including Kerala Administrative Service (KAS), Secretariat Assistant, Panchayath Secretary, BDO, Auditor, Assistant, LDC and LGS examination level questions. You need a lot of experience in taking an online exam.

1.

The distance travelled by a body in unit time

Ans:- Speed


2.

The unit of speed is

Ans:- m/s


3.

The displacement of a body in unit time is

Ans:- Velocity


4.

The unit of velocity

Ans:- m/s


5.

The rate of change of velocity of a body in unit time

Ans:- Acceleration


6.

The unit of accelaeration is

Ans:- m/s2


7.

The tendency of a body to continue its state of rest is

Ans:- Inertia


8.

Important scalar quantities are

Ans:- distance,speed,work,time,volume,mass,density etc


9.

important vector quantities are

Ans:- velocity,acceleration,force etc


10.

The law of inertia was discovered by

Ans:- Galileo


11.

The scientific branch that studies about the relative movements of interacting surfaces is

Ans:- Tribology


12.

The amount of water vapour in the air is

Ans:- Humidity


13.

If a piece of ice floating on the surface of water in a bucket melts completely, the water level will

Ans:- Remains the same


14.

The specific density of iron is -------than that Mercury

Ans:- Lower


15.

A ship that enters from river mouth to sea will -------

Ans:- Rises up a little


16.

A ship that enters from river mouth to sea will rises up a little because

Ans:- The density of sea water is higher than that of river water


17.

The density of water is maximum at

Ans:- 4 degree centigrade


18.

In atmosphere, the pressure -------- as the height increases

Ans:- decreases


19.

Atmospheric pressure is measured by

Ans:- Barometer


20.

During the peaceful climate, the atmopsheric pressure level of a barometer is ------------

Ans:- High


21.

What is used as liquid in Thermometer

Ans:- Mercury


22.

Mercury is used as the liquid in Thermometer because

Ans:- It does not wet glass


23.

Pascal law is related with

Ans:- Liquid Pressure


24.

Flesh tank, hydrolic press and hydrolic brake are working according to ------

Ans:- Pascal Law


25.

The weight of an object at equator is

Ans:- Zero


26.

The greatest gravitational force is felt in earth on

Ans:- North Pole


27.

The gravitational force between two objects will increases as their ---------- increases

Ans:- Mass


28.

The weight of an object in earth will be minimum at

Ans:- Poles


29.

The weight of a body on the moon ------- than its weight on the earth

Ans:- Will be less


30.

The mass of the moon is ------------ of the mass of the earth

Ans:- 1/8


31.

There is no ------- on the moon

Ans:- Atmosphere


32.

On the moon an astronaut can not drink lemonade with the help of straw because

Ans:- There is no atmosphere on the moon


33.

The minimum speed which an object must have to escape Earth's gravitational force is called

Ans:- Escape Velocity


34.

What is the escape velocity of earth

Ans:- 7 miles/s OR 11.2 km/s


35.

The force of attraction between the like molecules is called

Ans:- Cohesion


36.

The force of attraction between the unlike molecules is called

Ans:- Adhesion


37.

he force with which the earth attracts a body is called

Ans:- Weight


38.

Mass remains constant, while------------ varies place to place

Ans:- Weight


39.

The force that resists the movement of one surface over another is calleed

Ans:- Friction


40.

The force required by a revolving body is called

Ans:- Centripetal Force


41.

When a man circles round the earth in a spacecraft, his

Ans:- Mass remains constant, but weight becomes zero


42.

Two objects losing the same weight when immersed in water must have the same ------------

Ans:-Density


43.

Which force helps to separate cream from milk

Ans:-Centrifugal Force


44.

The energy acquired by an object with its state of rest is known as

Ans:-Potential Energy


45.

The energy acquired by an object by movement is called

Ans:-Kinetic Energy


46.

The energy possessed by the water in a reservoir is called

Ans:-Potential Energy


47.

The ability of body to return to its original shape and size on the removal of the deforming force

Ans:-Elasticity


48.

Which is more elastic, Glass or Steel

Ans:-Glass


49.

Which is more elastic, Steel or Rubber

Ans:-Rubber


50.

The force which opposes the relative motion between different layers of liquid or gases is called

Ans:-Viscous Force


51.

The property of a liquid by which forces are exerted between layers so as to reduce their relative motion is called

Ans:-Viscosity


52.

Fluids flow with zero viscosity is called

Ans:-Super Fluids


53.

Flow of liquid is measured by

Ans:-Venturimeter


54.

The surface tension decreases with the rise of ----------

Ans:-Temperature


55.

Study of sound is called

Ans:-Acoustics


56.

Echo and Reverberation are due to ---------

Ans:-Reflection of sound


57.

For the production of echo, there should be a minimum distance of ------- m between us and the reflecting surface

Ans:-17 m


58.

Bats generates --------- to catch insects and to move

Ans:-Ultrasonic Sound


59.

The audible frequency of human ear is between ------------- and -----------------

Ans:-20 Hertz and 20000 Hertz


60.

The velocity of sound in the air is ------

Ans:-340 m/s