MCQOPTIONS
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MCQOPTIONS
This section includes 1134 Mcqs, each offering curated multiple-choice questions to sharpen your Grade10 knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
A machine which scans a page to convert its texts and graphics into electronic signals and transmits it through telephone line is known as |
| A. | central processing unit |
| B. | computer |
| C. | fax machine |
| D. | photo phone |
| Answer» D. photo phone | |
| 52. |
The transfer of information from one place to another through different electronic and optical equipment is termed as |
| A. | gap of information |
| B. | flow of information |
| C. | transit information |
| D. | information collapse |
| Answer» C. transit information | |
| 53. |
The memory which starts the computer is |
| A. | Random access memory (RAM) |
| B. | Read Only Memory (ROM) |
| C. | Secondary memory |
| D. | central processing unit (CPU) |
| Answer» C. Secondary memory | |
| 54. |
The electron gun consists of an electron source which is an electrically heated cathode that ejects |
| A. | electrons |
| B. | neutrons |
| C. | protons |
| D. | phontons |
| Answer» B. neutrons | |
| 55. |
The electrons repel other electrons due to force |
| A. | F = qE |
| B. | F = ma |
| C. | P = mv |
| D. | S = vt |
| Answer» B. F = ma | |
| 56. |
A simply OR operation followed by a NOT operation is called |
| A. | AND operation |
| B. | NAND operation |
| C. | NOR operation |
| D. | OR operation |
| Answer» D. OR operation | |
| 57. |
If we apply a NOT gate at the output of OR gate then the result is |
| A. | NOR gate |
| B. | NAND gate |
| C. | NOT gate |
| D. | OR gate |
| Answer» B. NAND gate | |
| 58. |
NOT gate performs the basic logical function called |
| A. | conduction |
| B. | diversion |
| C. | inversion |
| D. | conversion |
| Answer» D. conversion | |
| 59. |
The central processing unit (CPU) contains a tiny rectangular chip called |
| A. | cluster |
| B. | transmitter |
| C. | microprocessor |
| D. | microphone |
| Answer» D. microphone | |
| 60. |
1 MB is equal to |
| A. | 2356 kilobytes |
| B. | 1024 kilobytes |
| C. | 1560 kilobytes |
| D. | 1190 kilobytes |
| Answer» C. 1560 kilobytes | |
| 61. |
As compared to radio waves or microwaves, the rate of sending information with light beams is |
| A. | equal |
| B. | smaller |
| C. | zero |
| D. | larger |
| Answer» E. | |
| 62. |
To produce a computer-based information system, we must together |
| A. | 5 parts |
| B. | 3 parts |
| C. | 2 parts |
| D. | 4 parts |
| Answer» B. 3 parts | |
| 63. |
Glass fibers have a thickness equal to |
| A. | test tube |
| B. | capillary tube |
| C. | hair |
| D. | half inch ribbon |
| Answer» D. half inch ribbon | |
| 64. |
A boolean variable can have only two values which are |
| A. | 0, 1 |
| B. | 1, 2 |
| C. | 1, 10 |
| D. | 0, 10 |
| Answer» B. 1, 2 | |
| 65. |
In OR operation if one of the inputs is '1' then output is |
| A. | 0 |
| B. | 2 |
| C. | 4 |
| D. | 1 |
| Answer» E. | |
| 66. |
The quantities whose values vary with time are |
| A. | digital |
| B. | scalar |
| C. | analogue |
| D. | vector |
| Answer» D. vector | |
| 67. |
The branch of electronics consisting of circuits which process analog quantities is called |
| A. | digital electronics |
| B. | analogue statistics |
| C. | analogue electronics |
| D. | analogue magnetics |
| Answer» D. analogue magnetics | |
| 68. |
The values of the output of the OR gate are always following the truth table of |
| A. | AND operation |
| B. | NAND operation |
| C. | OR operation |
| D. | NOT operation |
| Answer» D. NOT operation | |
| 69. |
Soft materials absorb a large amount of |
| A. | heat energy |
| B. | light energy |
| C. | electromagnetic waves |
| D. | sound energy |
| Answer» E. | |
| 70. |
The decibel scale is a logarithm measure of the amplitude of |
| A. | sound waves |
| B. | light waves |
| C. | heat waves |
| D. | electric current |
| Answer» B. light waves | |
| 71. |
The sensation of sound persists in our brain for about |
| A. | 0.1 s |
| B. | 0.5 s |
| C. | 0.3 s |
| D. | 0.4 s |
| Answer» B. 0.5 s | |
| 72. |
The range of the frequencies which a human ear can hear is called the |
| A. | pitch of sound |
| B. | loudness of sound |
| C. | audible frequency range |
| D. | quality of sound |
| Answer» D. quality of sound | |
| 73. |
The characteristic of sound by which we can distinguish between two sounds of same loudness and pitch is known as |
| A. | loudness |
| B. | pitch |
| C. | quality |
| D. | intensity |
| Answer» D. intensity | |
| 74. |
When a generator is connected in a closed circuit, the induced e.m.f generates |
| A. | electric current |
| B. | light |
| C. | potential difference |
| D. | electromagnetic difference |
| Answer» B. light | |
| 75. |
A high voltage transformer can reduce the voltage keeping the power |
| A. | low |
| B. | high |
| C. | zero |
| D. | constant |
| Answer» E. | |
| 76. |
A simple method of finding the direction of the magnetic field around the conductor is the |
| A. | Ohm's law |
| B. | Joule's law |
| C. | left hand grip rule |
| D. | right hand grip rule |
| Answer» E. | |
| 77. |
The number of coils in a transformer is |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 5 |
| Answer» B. 3 | |
| 78. |
When a coil rotates in a magnetic field, the induced current in it continuously changes from |
| A. | minimum to maximum value |
| B. | maximum to minimum value |
| C. | zero to maximum value |
| D. | maximum to zero |
| Answer» C. zero to maximum value | |
| 79. |
A body executing simple harmonic motion always vibrates about a |
| A. | nearest position |
| B. | variable position |
| C. | fixed position |
| D. | most far position |
| Answer» D. most far position | |
| 80. |
The kinetic energy of mass attached to spring at mean position is |
| A. | maximum |
| B. | minimum |
| C. | moderate |
| D. | may be max. or min. |
| Answer» B. minimum | |
| 81. |
If a body moves back and forth or to and fro about a point, then it is said to be |
| A. | consistency |
| B. | vibrating |
| C. | rotating |
| D. | displacing |
| Answer» C. rotating | |
| 82. |
The distance between 2 consecutive crests or troughs is called |
| A. | time period |
| B. | amplitude |
| C. | frequency |
| D. | wave length |
| Answer» E. | |
| 83. |
The motion of a ball placed in a bowl is |
| A. | simple harmonic motion |
| B. | compressional motion |
| C. | damped motion |
| D. | none of above |
| Answer» B. compressional motion | |
| 84. |
If spring is stiff, then the value of k is |
| A. | small |
| B. | moderate |
| C. | large |
| D. | approx. zero |
| Answer» D. approx. zero | |
| 85. |
The velocity of simple harmonic motion at the mean position is always |
| A. | maximum |
| B. | minimum |
| C. | zero |
| D. | negative |
| Answer» B. minimum | |
| 86. |
If 100 waves pass through a medium in 20seconds and their wavelength is 6cm then the velocity is |
| A. | 0.5ms-1 |
| B. | 0.3ms-1 |
| C. | 1ms-1 |
| D. | 2.5ms-1 |
| Answer» C. 1ms-1 | |
| 87. |
The time period of simple pendulum 1 m long at a location where g=10ms-1 will be |
| A. | 2.5 s |
| B. | 1.5 s |
| C. | 3 s |
| D. | 1.99 s |
| Answer» E. | |
| 88. |
The Electromotive force (EMF) developed by the generator depends upon |
| A. | area of rotating wire |
| B. | length of rotating wire |
| C. | radius of wire |
| D. | size of magnet |
| Answer» C. radius of wire | |
| 89. |
In A.C generator increasing the no. of turns in the coil |
| A. | decreases the Electromotive force (EMF) |
| B. | Electromotive force (EMF) remains same |
| C. | increases the Electromotive force (EMF) |
| D. | Electromotive force (EMF) becomes zero |
| Answer» D. Electromotive force (EMF) becomes zero | |
| 90. |
A generator inside a hydroelectric dam uses electromagnetic induction to convert the mechanical energy of a spinning turbine into |
| A. | chemical energy |
| B. | atomic energy |
| C. | heat energy |
| D. | electrical energy |
| Answer» E. | |
| 91. |
The process of generating an induced current in a circuit by changing the number of magnetic lines of force passing through it is called |
| A. | electromagnetic difference |
| B. | electromagnetic induction |
| C. | electromotive force |
| D. | potential difference |
| Answer» C. electromotive force | |
| 92. |
A power station generates 600 MW of electrical power which is fed to a transmission line. If the input voltage is 300 Kv, then what current would flow in the transmission line? |
| A. | 5 × 103 A |
| B. | 10 × 103 A |
| C. | 2 × 103 A |
| D. | 7 × 103 A |
| Answer» D. 7 × 103 A | |
| 93. |
The velocity of the wave is defined as |
| A. | v = fλ |
| B. | v = st |
| C. | v = at |
| D. | f=1 ⁄ T |
| Answer» B. v = st | |
| 94. |
The maximum displacement of a body from its mean position is |
| A. | time period |
| B. | frequency |
| C. | vibration |
| D. | amplitude |
| Answer» E. | |
| 95. |
The period of the pendulum is independent of its |
| A. | mass only |
| B. | amplitude only |
| C. | frequency |
| D. | mass and amplitude |
| Answer» E. | |
| 96. |
Waves which do not require any medium for their propagation are called |
| A. | mechanical waves |
| B. | electromagnetic waves |
| C. | transverse waves |
| D. | longitudinal waves |
| Answer» C. transverse waves | |
| 97. |
The mass doesn't stop at the mean position due to |
| A. | Inertia |
| B. | Friction |
| C. | Torque |
| D. | Gravity |
| Answer» B. Friction | |
| 98. |
If 2 resistors of 5kΩ and 7kΩ are connected in series across a 15V battery, then the current flowing through each of the resistance should be |
| A. | 2mA |
| B. | 3.6mA |
| C. | 5mA |
| D. | 1.25mA |
| Answer» E. | |
| 99. |
Insulators can be easily charged by |
| A. | supplying electrons |
| B. | Electromotive force (EMF) |
| C. | friction |
| D. | protons |
| Answer» D. protons | |
| 100. |
The electric power enters our house through |
| A. | ground wire |
| B. | neutral wire |
| C. | live wire |
| D. | all of above |
| Answer» E. | |