Question 1.
Tape recorder should not be kept near one of the following things :
A. Clock
B. Magnet
C. Electrical switchboard
D. Radio
Ans: B. Magnet
Question 2.
Which of the following group of elements are diamagnetic?
A. Argon, copper, silver
B. Hydrogen, argon, copper
C. Oxygen, copper, silver
D. Hydrogen, oxygen, Argon
Ans: A. Argon, copper, silver
Question 3.
Magnetism in materials is due to
A. Electrons at rest
B. Circular motion of electrons
C. Protons at rest
D. All neutrons at rest
Ans: B. Circular motion of electrons
Question 4.
The domain theory of magnetism applies to
A. Aluminium
B. Copper
C. Silver
D. Cobalt
Ans: D. Cobalt
Question 5.
Eddy current is generated by
A. Conduction
B. Induction
C. Convection
D. Direct Current
Ans: B. Induction
Question 6.
At the Curie temperature, the ferromagnetic materials get converted into
A. Diamagnetic materials
B. Non-magnetic materials
C.Paramagnetic materials
D. None of the others
Ans: C.Paramagnetic materials
Question 7.
The method of magnetisation is:
A. Hammering a magnet
B. Heating a magnet
C. Passing direct current through it
D. Passing alternating current through it
Ans: A. Hammering a magnet
Question 8.
The paramagnetic theory of magnetism applies to
A. Nickel
B. Mercury
C. Iron
D. Platinum
Ans: D. Platinum
Question 9.
Which of the following circuit elements is used to ”block” DC in an electronic circuit ?
A. Resistances
B. Capacitance
C. Inductance
D. Diode
Ans: B. Capacitance
Question 10.
In the process of magnetisation of a bar
A. The entire bulk of the bar gets magnetised
B. Only the surface of the bar gets magnetised
C. Only the ends of the bar get magnetised
D. Only some parts of the outer layers of the bar get magnetised
Ans: A. The entire bulk of the bar gets magnetised
Question 11.
Magnetic keepers are pieces of
A. Nickel
B. Cobalt
C. Steel
D. Soft iron
Ans: C. Away from electrical wiring
Question 12.
Where should a boat compass be mounted?
A. Near magnet
B. Near iron
C. Away from electrical wiring
D. All the above
Ans: C. Away from electrical wiring
Question 13.
A photostat machine works on
A. Electromagnetic image making
B. Electrostatic image making
C. Magnetic image making
D. Thermal image making
Ans: B. Electrostatic image making
Question 14.
Magnetic domains normally occur in
A. Copper
B. Silver
C. Iron
D. All of the above
Ans: C. Iron
Question 15.
Curie point is the temperature at which
A. Matter becomes radioactive
B. A metal loses magnetic properties.
C. A metal loses conductivity
D. Transmutation of metal occurs.
Ans: B. A metal loses magnetic properties.
Question 16.
Which of the following properties is found only in ferromagnetic materials ?
A. Susceptibility independent of temperature
B. Point in a particular direction
C. Hysteresis
D. Attracting a magnetic substance
Ans: C. Hysteresis
Question 17.
On which of the following techniques photostate machine works ?
A. Magnetic Image—Making
B. Thermal Image—Making
C. Electrostatic Image—Making
D. Electromagnetic Image— Making
Ans: C. Electrostatic Image—Making
Question 18.
A small piece of a substance is weakly attracted by a strong magnetic field. The substance is
A. Diamagnetic
B. Ferromagnetic
C. Paramagnetic
D. Non-magnetic
Ans: C. Paramagnetic
Question 19.
Tesla is a unit of magnetic :
A. Flux
B. Induction
C. Moment
D. Field
Ans: D. Field
Question 20.
Magnetic field lines about a current-carrying wire
A. Circle the wire in closed loops
B. Extend radially from the wire
C. Both of these
D. None of the above
Ans: A. Circle the wire in closed loops
Physics GK MCQs all set
- Physics MCQs Set-1
- Physics MCQs Set-2
- Physics MCQs Set-3
- Physics MCQs Set-4
- Physics MCQs Set-5
- Physics MCQs Set-6
- Physics MCQs Set-7
- Physics MCQs Set-8
- Physics MCQs Set-9
- Physics MCQs Set-10
- Physics MCQs Set-11
- Physics MCQs Set-12
- Physics MCQs Set-13
- Physics MCQs Set-14
- Physics MCQs Set-15
- Physics MCQs Set-16
- Physics MCQs Set-17
- Physics MCQs Set-18
- Physics MCQs Set-19
- Physics MCQs Set-20
- Physics MCQs Set-21
- Physics MCQs Set-22
- Physics MCQs Set-23
- Physics MCQs Set-24
- Physics MCQs Set-25
- Physics MCQs Set-26
- Physics MCQs Set-27
- Physics MCQs Set-28
- Physics MCQs Set-29
- Physics MCQs Set-30
- Physics MCQs Set-31
- Physics MCQs Set-32
- Physics MCQs Set-33
- Physics MCQs Set-34
- Physics MCQs Set-35
- Physics MCQs Set-36
- Physics MCQs Set-37
- Physics MCQs Set-38
- Physics MCQs Set-39
- Physics MCQs Set-40
- Physics MCQs Set-41
- Physics MCQs Set-42
- Physics MCQs Set-43
- Physics MCQs Set-44
- Physics MCQs Set-45
- Physics MCQs Set-46
- Physics MCQs Set-47
- Physics MCQs Set-48
- Physics MCQs Set-49
- Physics MCQs Set-50
- Physics MCQs Set-51
- Physics MCQs Set-52
- Physics MCQs Set-53
- Physics MCQs Set-54
- Physics MCQs Set-55
- Physics MCQs Set-56
- Physics MCQs Set-57
- Physics MCQs Set-58
- Physics MCQs Set-59
- Physics MCQs Set-60
- Physics MCQs Set-61
- Physics MCQs Set-62
- Physics MCQs Set-63
- Physics MCQs Set-64
- Physics MCQs Set-65
- Physics MCQs Set-66
- Physics MCQs Set-67
- Physics MCQs Set-68
- Physics MCQs Set-69
- Physics MCQs Set-70
- Physics MCQs Set-71
- Physics MCQs Set-72
- Physics MCQs Set-73
- Physics MCQs Set-74
- Physics MCQs Set-75
- Physics MCQs Set-76
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