MCQOPTIONS

Explore topic-wise MCQs in Physics.

This section includes 132 Mcqs, each offering curated multiple-choice questions to sharpen your Physics knowledge and support exam preparation. Choose a topic below to get started.

51.	To convert a moving coil galvanometer into an ammeter, connect
A.	a high resistance in series
B.	a high resistance in parallel
C.	\[5\,\,\Omega \]
D.	a small resistance in series
Answer» D. a small resistance in series

52.	When a conductor carrying an electric current is free to move in a magnetic field, the direction in which it will move in given by
A.	Cork-screw rule
B.	Fleming's left hand rule
C.	N/C
D.	Swimming rule
Answer» C. N/C

53.	Plastic, rubber, paper are examples of:
A.	Conductor
B.	Insulator
C.	\[\text{66}\text{.7}\]
D.	Semi-conductors
E.	None of these
Answer» C. \[\text{66}\text{.7}\]

54.	Current will flow in a circuit containing:
A.	A rubber wire, an open switch, a cell
B.	A closed switch, a rubber wire, a cell
C.	1:2
D.	All the above
E.	None of these
Answer» D. All the above

55.	A type of magnet in which no electricity is required for magnetic property is:
A.	Soft magnet
B.	Hard magnet
C.	3 : 2 : 2
D.	Temporary magnet
E.	None of these
Answer» D. Temporary magnet

56.	South Pole of a freely suspended magnet is attracted towards _______ direction of earth.
A.	East
B.	West
C.	Independent of x
D.	South
E.	None of these
Answer» E. None of these

57.	In _____, magnetic ore was first discovered.
A.	Pakistan
B.	India
C.	0.125
D.	Magnesia
E.	None of these
Answer» E. None of these

58.	North pole of a magnet can be identified by:
A.	Using iron nails
B.	Another magnet without marked poles
C.	in the ratio of half the atomic weight of copper to the atomic weight of silver
D.	Another magnet having marked north and South Pole
E.	None of these
Answer» E. None of these

59.	North Pole of a magnetic needle is usually painted ______.
A.	Black
B.	Blue
C.	Filament
D.	Orange
E.	None of these
Answer» D. Orange

60.	North pole and south pole are:
A.	Like poles
B.	Unlike poles
C.	\[5\,J\text{/}s\]
D.	Not poles
E.	None of these
Answer» C. \[5\,J\text{/}s\]

61.	_____ is a piece of iron placed across the poles of a magnet to preserve the strength of the magnet.
A.	Preserver
B.	Keeper
C.	100 W
D.	Compass
E.	None of these
Answer» C. 100 W

62.	Which of the following will attract a magnet?
A.	Sewing needle
B.	Rubber eraser
C.	2 volts
D.	Aluminum can
E.	None of these
Answer» B. Rubber eraser

63.	_____ is the sure test of magnetism.
A.	Attraction
B.	Repulsion
C.	\[\frac{{{l}_{1}}}{{{l}_{2}}}=\frac{2}{3}\]
D.	Breaking
E.	None of these
Answer» C. \[\frac{{{l}_{1}}}{{{l}_{2}}}=\frac{2}{3}\]

64.	Which of the following magnets has only one pole?
A.	Horseshoe
B.	U-shaped magnet
C.	\[{{V}_{1}}<{{V}_{2}}<{{V}_{3}}\]
D.	cylindrical magnet
E.	None of these
Answer» F.

65.	Strips of magnetite which was used to find directions to lead the way for ships:
A.	Magnes
B.	Lode stone
C.	\[4.5\,\,\Omega \]
D.	Direction stone
E.	None of these
Answer» C. \[4.5\,\,\Omega \]

66.	Which of the following materials is attracted by a magnet?
A.	Silver
B.	Plastic
C.	\[2.0\,ampere\]
D.	Glass
E.	None of these
Answer» D. Glass

67.	Energy used by the following appliances to run is:
A.	Kinetic energy
B.	Electrical energy
C.
D.	Sound energy
E.	None of these
Answer» C.

68.	Combination of two or more cells is called:
A.	Sockets
B.	Electric circuit
C.	320 W
D.	Battery
E.	None of these
Answer» E. None of these

69.	An electric cell produces electricity from the:
A.	Filament present inside it.
B.	Power socket present outside it.
C.	Four
D.	Insulator present inside it.
E.	None of these
Answer» D. Insulator present inside it.

70.	In which of the following figures a bulb will glow? (i) (ii) (iii) (iv)
A.	(i) and (ii)
B.	(ii) and (iii)
C.	\[0.5\times {{10}^{12}}A\]
D.	(ii) and (iv)
E.	None of these
Answer» E. None of these

71.	A magnifying lens is a ___ lens.
A.	Diverging
B.	Converging
C.	perpendicular to each other
D.	Plane
E.	None of these
Answer» C. perpendicular to each other

72.	Power of a lens is ___.
A.	2 F
B.	3 F
C.	electrical energy into mechanical energy
D.	\[1/2\,F\]
E.	None of these
Answer» D. \[1/2\,F\]

73.	The distance between focus and centre of a curved mirror is known as:
A.	Focal point
B.	Focal length
C.	series or parallel
D.	Normal
E.	None of these
Answer» C. series or parallel

74.	A circuit diagram which includes a battery of 3 cells, a bulb and an open switch is:
A.
B.	None of these
Answer» B. None of these

75.	Short wire has ____ whereas long wire has ____ resistance.
A.	More, less
B.	Less, no
C.	(iv) > (iii) > (ii) > (i)
D.	All the above
E.	None of these
Answer» D. All the above

76.	Which of the following statements will be true for the given circuit, when the switch will be on?
A.	Lamp 3 will glow first.
B.	Lamp 1 will glow first.
C.	P and R
D.	All the lamps will glow together
E.	None of these
Answer» B. Lamp 1 will glow first.

77.	A virtual, erect and magnified image is obtained by a concave mirror when object is placed:
A.	At a distance between focal length and twice the focal length.
B.	At a distance greater than twice the focal length.
C.	a small resistance in parallel
D.	Far off
E.	None of these
Answer» D. Far off

78.	Image formed by a plane mirror is:
A.	Inverted and virtual
B.	Virtual and erect
C.	Laplace's rule
D.	Real and erect
E.	None of these
Answer» C. Laplace's rule

79.	A dentist uses ____ to see a magnified image of a teeth.
A.	Concave mirror
B.	Convex mirror
C.	Terminals
D.	Concave lens
E.	None of these
Answer» B. Convex mirror

80.	Bulging outward surface of a spoon is:
A.	Concave
B.	Convex
C.	A copper wire, a closed switch, a cell
D.	Concavo-convex
E.	None of these
Answer» C. A copper wire, a closed switch, a cell

81.	The amount of current that flows depends on the amount of ___ applied by the battery.
A.	Voltage
B.	Resistance
C.	Permanent magnet
D.	All the above
E.	None of these
Answer» B. Resistance

82.	Electric fuse works on ____ effect of electric current.
A.	Magnetic
B.	Lightening
C.	China
D.	Heating
E.	None of these
Answer» E. None of these

83.	Which is the commercial unit of electrical energy?
A.	\[Joule/s\]
B.	Kilowatt
C.	Using a steel bar
D.	Kilowatt-hour
E.	None of these
Answer» E. None of these

84.	___ is measured by voltmeter.
A.	Current
B.	Resistance
C.	Red
D.	Magnetism
E.	None of these
Answer» D. Magnetism

85.	What is the function of the component shown above?
A.	It is used to connect the bulb to the other components in the circuit.
B.	It provides the energy for the bulb to glow.
C.	Same poles
D.	It measures the current in a circuit.
Answer» D. It measures the current in a circuit.

86.	Label the dry cell in the correct order.
A.	(i) Carbon and Manganese dioxide mixture, (ii) Carbon rod, (iii) Ammonium chloride
B.	(i) Carbon rod, (ii) Ammonium chloride, (iii) Zinc container
C.	Solder
D.	(i) Zinc container, (ii) Carbon rod, (iii) Carbon and Manganese dioxide mixture
Answer» D. (i) Zinc container, (ii) Carbon rod, (iii) Carbon and Manganese dioxide mixture

87.	There is a mistake in the given classification table Non-conductor of electricity Conductor of electricity Wool Copper Cotton Brass Plastic Iron Cork Steel Graphite Silver Which of the following is placed incorrectly in the groups?
A.	Wool
B.	Graphite
C.	A book
D.	Silver
Answer» C. A book

88.	Ravi connected three bulbs with the cells and a switch as shown. When switch is moved to ON position.
A.	The bulb X will glow first
B.	The bulb Y will glow first
C.	Movement
D.	All the bulbs will glow simultaneously.
Answer» E.

89.	In the given diagram, there are two switches \[{{S}_{1}}\] and \[{{S}_{2}}\] and two bulbs X and Y. If switch \[{{S}_{1}}\], is closed and switch\[{{S}_{2}}\] is open then
A.	Only bulb X will glow
B.	Only bulb Y will glow
C.	No force will be experienced by them.
D.	Neither bulb X nor bulb Y will glow.
Answer» C. No force will be experienced by them.

90.	Three identical bulbs namely P, Q and R are connected to a battery as shown. What will happen when the circuit is closed?
A.	R will glow bright but Q and P will be dim.
B.	P, Q and R all will glow equally bright.
C.	Bar
D.	P will glow bright, but Q and R will be dim.
Answer» E.

91.	What does a battery contain?
A.	A minimum of two terminals
B.	A minimum of three terminals
C.	Natural stone
D.	A bulb and a switch
Answer» B. A minimum of three terminals

92.	Which one of the following is the correct grouping of different materials according to their electrical conductivity?
A.	Electrical Insulators Electrical Conductors Plastic/wood Mercury, tungsten
B.	Electrical Insulators Electrical Conductors Carbon, steel Iron, paper
C.	Cobalt
D.	Electrical Insulators Electrical Conductors Iron, rubber Silver, plastic
Answer» B. Electrical Insulators Electrical Conductors Carbon, steel Iron, paper

93.	Which of the following statements is true?
A.	Electricity can be created.
B.	Electricity flows in a circuit with gaps.
C.	Potential energy
D.	A cell consists of three terminals.
Answer» D. A cell consists of three terminals.

94.	Which metal is used for making electric wires?
A.	Graphite
B.	Iron
C.	Terminals
D.	Zinc
Answer» D. Zinc

95.	The frequency of A.C. mains in India is
A.	30c/s
B.	50c/s
C.	\[B\omega {{l}^{2}}\]
D.	120c/s
Answer» C. \[B\omega {{l}^{2}}\]

96.	In an a.c. circuit, the r.m.s. value of current, \[{{I}_{rms}}\]is related to the peak current, \[{{I}_{0}}\] by the relation
A.	\[{{I}_{rms}}=\sqrt{2{{I}_{0}}}\]
B.	\[{{I}_{rms}}=\pi {{I}_{0}}\]
C.	If assertion is true but reason is false.
D.	\[{{I}_{rms}}=\frac{1}{\sqrt{2}}{{I}_{0}}\]
Answer» E.

97.	Choke coil works on the principle of
A.	transient current
B.	self-induction
C.	If assertion is true but reason is false.
D.	watt less current
Answer» C. If assertion is true but reason is false.

98.	The current in a generator armature is AC because
A.	the magnetic field reverses at intervals
B.	the current in the field coils is AC
C.	If assertion is true but reason is false.
D.	the commutator feeds current into it in opposite directions at every half cycle
Answer» D. the commutator feeds current into it in opposite directions at every half cycle

99.	In an electric motor, conversion takes place of
A.	chemical energy into electrical energy
B.	electrical energy into mechanical energy
C.	If assertion is true but reason is false.
D.	electrical energy into chemical energy
Answer» C. If assertion is true but reason is false.

100.	The essential difference between an AC generator and a DC generator is that
A.	AC generator has an electromagnet while a DC generator has permanent magnet
B.	DC generator will generate a higher voltage
C.	Both the hysteresis loss and heating effect of current
D.	AC generator has slip rings while the DC generator has a commutate or
Answer» E.