MCQOPTIONS
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MCQOPTIONS
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. | |