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SAHAKARI RACE PLUS MODEL EXAM :03 DAIRY FARM INSTRUCTOR
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SAHAKARI RACE PLUSMODEL EXAM :03
DAIRY FARM INSTRUCTOR
1)Two uncharged bodies on rubbing, get charged due to:
A.conduction B.friction C.induction D.none of these
2)Space between the plates of a parallel plate capacitor is filled with a dielectric slab. The capacitor
is charged and then the supply is disconnected to it. If the slab is now taken out , then:
A.work is not done to take out the slab
B.energy stored in the capacitor reduces
C.potential difference across the capacitor is decreased
D.potential difference across the capacitor is increased
3)Metals ............ ohm's law
A)Do not obey B)Obey C)Sometimes obey D)Never obey
4)A moving coil type of galvanometer is based upon the principle that
A.coil carrying current experiences a torque in magnetic field.
B.a coil carrying current produces a magnetic field.
C.a coil carrying current experiences impulse in a magnetic field.
D.a coil carrying current experiences a force in a magnetic field
5).Unit of induced emf is:
A.ampere B.volt C.joule D.electron volt
6)A transformer
A.Converts AC to DC B.Converts DC to AC
C.Increases or decreases (step up or step down) AC voltage
D.Increases or decreases (step up or step down) DC voltage
SAHAKARI RACE PLUS
7)What are the colours of the Sun observed most during sunrise/sunset and noon?
, A.white and red B.reddish and orange C.yellow and reddish D.orange and blue
8)The best suitable metal for photoelectric effect is:
A.Iron B.Steel C.Aluminium D.Cesium
9)When two deuterium nuclei fuse together to form a tritium nucleus, we get a
A.neutron B.deuteron C.alpha particle D.proton
10)The value indicated by Fermi energy level in an intrinsic semiconductor is
A.the average energy of electrons and holes.
B.the energy of electrons in conduction band.
C.the energy of holes in valence band.
D.the energy of forbidden region.
11)The man who is known as the Father of Experimental Physics is
A.Newton B.Albert Einstien C.Galileo D.Rutherford
12)Which of the following is/are dimensionless ?
a) Boltzman’s constant b) Planck’s constant c) Poisson’s ratio d) Relative constant
A.a and b B.c and b C.c and d D.d and a
13)Which of the following is/are true about acceleration
A.Acceleration is defined as the rate of change of velocity. B.Its SI unit is m/s².
C.Negative acceleration is called retardation D.All the above.
14)The set containing only scalar quantities is:
A.velocity, specific heat and latent heat
B.electric intensity, electric potential and electric capacity
C.pole strength, permeability and permittivity
D.torque, angular acceleration and linear momentum
SAHAKARI RACE PLUS
15)A ball of mass 'm' moves normal to a wall with a velocity 'u' and rebounds with the same speed.
The change in momentum of the ball during the rebounding is
A.2mu towards the wall B.2mu away from the wall
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