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.
| 651. |
A magnifying glass forms |
| A. | real image |
| B. | inverted image |
| C. | virtual image |
| D. | fake image |
| Answer» D. fake image | |
| 652. |
The lens which causes incident parallel rays of light to diverge at a point is called |
| A. | convex lens |
| B. | concave lens |
| C. | counter lens |
| D. | fiber lens |
| Answer» C. counter lens | |
| 653. |
In Computer terminology, the processed data is called |
| A. | binary data |
| B. | code |
| C. | information |
| D. | language |
| Answer» D. language | |
| 654. |
A device used to transfer data between computers is called |
| A. | DVD |
| B. | CD |
| C. | Hard drive |
| D. | Flash drive |
| Answer» E. | |
| 655. |
The light will escape through optic fiber if the angle of incidence with cladding becomes |
| A. | more than critical angle |
| B. | less than critical angle |
| C. | equal to critical angle |
| D. | equal to total internal reflection |
| Answer» C. equal to critical angle | |
| 656. |
All modern telecommunications use some form of |
| A. | chemical radiation |
| B. | electromagnetic radiation |
| C. | nuclear radiation |
| D. | atomic radiation |
| Answer» C. nuclear radiation | |
| 657. |
A word processing program that you can use to write letters on your computer is a type of |
| A. | software |
| B. | hardware |
| C. | cluster |
| D. | transmitter |
| Answer» B. hardware | |
| 658. |
In mirrors, images are formed through |
| A. | reflection |
| B. | refraction |
| C. | defraction |
| D. | acoustics |
| Answer» B. refraction | |
| 659. |
The phenomenon in which light traveling in one medium falls on the surface of another medium and turns back in the same medium is called |
| A. | Refraction of light |
| B. | Reflection of light |
| C. | Bending of light |
| D. | diffraction of light |
| Answer» C. Bending of light | |
| 660. |
The outer concentric shell of the fiber optics is called |
| A. | diopters |
| B. | core |
| C. | prism |
| D. | cladding |
| Answer» E. | |
| 661. |
A bundle of thousands of optical fibers bonded together is called |
| A. | diopters |
| B. | heat pipe |
| C. | light pipe |
| D. | microscope |
| Answer» D. microscope | |
| 662. |
The thin lens formula assumes that lenses have |
| A. | no thickness |
| B. | thickness |
| C. | no diopters |
| D. | none of above |
| Answer» B. thickness | |
| 663. |
The phenomenon in which radiations split matter into ions is called |
| A. | denaturing |
| B. | ionization |
| C. | condensation |
| D. | atomization |
| Answer» C. condensation | |
| 664. |
Technimum-99 has a half-life of 6 hours. If there is 300 mg of it, how much will be left in 48 hours? |
| A. | 1.58 mg |
| B. | 1.25 mg |
| C. | 1.17 mg |
| D. | 2.56 mg |
| Answer» D. 2.56 mg | |
| 665. |
The radiations that can ionize the matter are |
| A. | alpha radiations |
| B. | gamma radiations |
| C. | beta radiations |
| D. | all of above |
| Answer» E. | |
| 666. |
Radium-226 has a half-life of |
| A. | 1160 years |
| B. | 1340 years |
| C. | 1580 years |
| D. | 1620 years |
| Answer» E. | |
| 667. |
A stream of high energy electrons is the |
| A. | alpha radiation |
| B. | gamma radiation |
| C. | beta radiations |
| D. | no radiations |
| Answer» D. no radiations | |
| 668. |
Cathode rays must carry |
| A. | positive charge |
| B. | no charge |
| C. | negative charge |
| D. | all of above |
| Answer» D. all of above | |
| 669. |
When all of AND gate inputs are at logic 1, the output will be |
| A. | 2 |
| B. | 0 |
| C. | 3 |
| D. | 1 |
| Answer» E. | |
| 670. |
The values for digital signals are |
| A. | 1 and 2 |
| B. | 3 and 4 |
| C. | 5 and 6 |
| D. | 0 and 1 |
| Answer» E. | |
| 671. |
The quantities whose values vary continuously or remain constant are known as |
| A. | analogue quantities |
| B. | digital quantities |
| C. | negative quantities |
| D. | positive quantities |
| Answer» B. digital quantities | |
| 672. |
The NOT gate inverts the output of |
| A. | AND gate |
| B. | OR gate |
| C. | NAND gate |
| D. | NOT gate |
| Answer» B. OR gate | |
| 673. |
The most powerful and swift computer which can send information in one thousand millionth part of a second is known as |
| A. | super computer |
| B. | mini computer |
| C. | mainframe computer |
| D. | desktop computer |
| Answer» B. mini computer | |
| 674. |
A DVD can store data up to |
| A. | 15 gigabytes |
| B. | 23 gigabytes |
| C. | 20 gigabytes |
| D. | 17 gigabytes |
| Answer» E. | |
| 675. |
It stores information about the subscribers located within the cluster and is responsible for directing calls to them |
| A. | fax station |
| B. | base station |
| C. | mobile switching center |
| D. | public call office |
| Answer» D. public call office | |
| 676. |
In telephone, information is sent through wires in the form of |
| A. | cathode rays |
| B. | electromagnet waves |
| C. | electric signals |
| D. | light |
| Answer» D. light | |
| 677. |
If a CD is made of metal or glass, it is called |
| A. | flash drive |
| B. | floppy disk |
| C. | hard disk |
| D. | audio cassette |
| Answer» D. audio cassette | |
| 678. |
The current-carrying loop inside the magnetic field rotate due to the |
| A. | current acting on the coil |
| B. | torque acting on the coil |
| C. | couple acting on the coil |
| D. | light acting on the coil |
| Answer» C. couple acting on the coil | |
| 679. |
A step-up transform has a turns ratio of 1: 200. An alternating supply of 15 V is connected across the primary coil. The secondary voltage should be |
| A. | 3000 volts |
| B. | 1500 volts |
| C. | 1000 volts |
| D. | 2000 volts |
| Answer» B. 1500 volts | |
| 680. |
Change in no. of magnetic field lines induces |
| A. | current in coil |
| B. | Electromotive force (EMF) in the coil |
| C. | frequency in coil |
| D. | all of above |
| Answer» C. frequency in coil | |
| 681. |
The electric power delivered to the secondary circuit is equal to the power supplied to the primary circuit in a/an |
| A. | ideal transformer |
| B. | step-down transformer |
| C. | step-up transformer |
| D. | negative transformer |
| Answer» B. step-down transformer | |
| 682. |
When a current passes through a conductor, it produces a magnetic field around it. This is discovered by |
| A. | Faraday |
| B. | Ampere |
| C. | Fleming |
| D. | Johns Burge |
| Answer» C. Fleming | |
| 683. |
Ultrasonic waves are very useful for detecting |
| A. | large objects |
| B. | small objects |
| C. | gases |
| D. | none of above |
| Answer» C. gases | |
| 684. |
A safe level of noise depends on |
| A. | level of noise and exposure to noise |
| B. | area |
| C. | pitch |
| D. | frequency |
| Answer» B. area | |
| 685. |
Stethoscopes operate on the transmission of |
| A. | electricity |
| B. | signals |
| C. | light |
| D. | sound |
| Answer» E. | |
| 686. |
The intensity level of the faintest audible sound is |
| A. | 25 dB |
| B. | 0 dB |
| C. | 10 dB |
| D. | 100 dB |
| Answer» C. 10 dB | |
| 687. |
If a doctor counts 80 heartbeats in 1 minute, then the frequency of heartbeats should be |
| A. | 1.33 Hz |
| B. | 1.99 Hz |
| C. | 1.39 Hz |
| D. | 2.33 Hz |
| Answer» B. 1.99 Hz | |
| 688. |
The medium which sends information from source to receiver is called |
| A. | transmission channel |
| B. | transmitter |
| C. | receiver |
| D. | optic fiber |
| Answer» B. transmitter | |
| 689. |
The areas between the pits are known as |
| A. | bytes |
| B. | lands |
| C. | patterns |
| D. | data |
| Answer» C. patterns | |
| 690. |
It carries a radio transmitter and receiver inside it and sends and receives a message in the form of radio waves |
| A. | fax machine |
| B. | computer |
| C. | photo phone |
| D. | cell phone |
| Answer» E. | |
| 691. |
Cassettes are based on |
| A. | electricity |
| B. | magnetism |
| C. | electromagnetism |
| D. | waves |
| Answer» C. electromagnetism | |
| 692. |
Term hardware is referred to |
| A. | software |
| B. | data |
| C. | machinery |
| D. | procedure |
| Answer» D. procedure | |
| 693. |
The direction of free test charge will be the direction of |
| A. | electric intensity |
| B. | coulomb's force |
| C. | magnetic intensity |
| D. | protons |
| Answer» B. coulomb's force | |
| 694. |
The field lines always emerge from |
| A. | negative charge |
| B. | positive charge |
| C. | the central point of both charges |
| D. | all of above |
| Answer» C. the central point of both charges | |
| 695. |
The SI unit of charge is |
| A. | Newton |
| B. | coulomb |
| C. | Pascal |
| D. | omega |
| Answer» C. Pascal | |
| 696. |
To store, the charge a device is used called |
| A. | electric box |
| B. | capacitor |
| C. | plug |
| D. | adopter |
| Answer» C. plug | |
| 697. |
When a charge is released in an electric field, it moves from a point of potential |
| A. | in straight line |
| B. | none of others |
| C. | higher to lower |
| D. | lower to higher |
| Answer» D. lower to higher | |
| 698. |
Cats can hear frequencies up to |
| A. | 30,000 Hz |
| B. | 25,000 Hz |
| C. | 40,000 Hz |
| D. | 50,000 Hz |
| Answer» C. 40,000 Hz | |
| 699. |
The SI unit of intensity of sound is |
| A. | W m-2 |
| B. | W m-1 |
| C. | m-2 |
| D. | W -1 |
| Answer» B. W m-1 | |
| 700. |
The loudness of sound is related most closely to its |
| A. | frequency |
| B. | period |
| C. | amplitude |
| D. | wavelength |
| Answer» D. wavelength | |