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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.
| 1001. |
AND gate can be formed by using two |
| A. | NOT gates |
| B. | OR gate |
| C. | NOR gates |
| D. | NAND gates |
| Answer» D. NAND gates | |
| 1002. |
An alternating voltage varying between the maximum value of +5V and the minimum value of −5V is |
| A. | digital signal |
| B. | analogue signal |
| C. | Wi-Fi signal |
| D. | current signal |
| Answer» C. Wi-Fi signal | |
| 1003. |
An analog circuit which amplifies the signal without changing its shape to such an extent that it can operate a loudspeaker is called |
| A. | grid |
| B. | amplifier |
| C. | woofer |
| D. | switch |
| Answer» C. woofer | |
| 1004. |
Temperature, time, pressure and distance are |
| A. | analogue quantities |
| B. | digital quantities |
| C. | negative quantities |
| D. | positive quantities |
| Answer» B. digital quantities | |
| 1005. |
To display heartbeats, waveforms and measuring voltages we use |
| A. | cystoscope |
| B. | gastro-scope |
| C. | microscope |
| D. | cathode-ray oscilloscope |
| Answer» E. | |
| 1006. |
The radiation which does not change its direction is |
| A. | β radiation |
| B. | α radiation |
| C. | γ radiation |
| D. | no radiation |
| Answer» D. no radiation | |
| 1007. |
The half-life of &15&3N is 6.5 s. A sample of this nuclide of hydrogen is observed for 32.5 s. The fraction of the original radioactive isotope remaining after this time is |
| A. | 1 ⁄ 32 |
| B. | 1 ⁄ 16 |
| C. | 1 ⁄ 8 |
| D. | 1 ⁄ 4 |
| Answer» B. 1 ⁄ 16 | |
| 1008. |
The radiation that does not change its direction inside the magnetic field is |
| A. | alpha |
| B. | beta |
| C. | gamma |
| D. | x-ray |
| Answer» D. x-ray | |
| 1009. |
The radiations bend in the opposite direction in the magnetic field are |
| A. | α and β radiations |
| B. | α and γ radiations |
| C. | γ and β radiations |
| D. | all of above |
| Answer» B. α and γ radiations | |
| 1010. |
The greatest power of ionization is in |
| A. | alpha particles |
| B. | gamma particles |
| C. | beta particles |
| D. | none of above |
| Answer» B. gamma particles | |
| 1011. |
The total current is equal to the sum of the currents in various resistances in |
| A. | series combination |
| B. | parallel combination |
| C. | circular combination |
| D. | random combination |
| Answer» C. circular combination | |
| 1012. |
The energy supplied by a battery to unit positive charge flowing in a closed circuit is called |
| A. | electrical energy |
| B. | Electromotive force (EMF) |
| C. | mechanical energy |
| D. | kinetic energy |
| Answer» C. mechanical energy | |
| 1013. |
Glass, wood, plastic, silk, and fur are examples of |
| A. | metals |
| B. | plasma |
| C. | liquids |
| D. | insulators |
| Answer» E. | |
| 1014. |
2 resistances of 4kΩ and 6kΩ are joined in series, if a battery of 10 V is connected across the ends then, the current passing through each of the resistance is |
| A. | 1 mA |
| B. | 10 mA |
| C. | 5 mA |
| D. | 2 mA |
| Answer» B. 10 mA | |
| 1015. |
Voltage can be fatal of |
| A. | 10 V |
| B. | 20 V |
| C. | 15 V |
| D. | 50 V |
| Answer» E. | |
| 1016. |
Current can be fatal of |
| A. | 50 mA |
| B. | 30 mA |
| C. | 5 mA |
| D. | 10 mA |
| Answer» B. 30 mA | |
| 1017. |
In a circuit 3 resistors 2&Omega, 3&Omega, 6Ω are connected (in parallel combination) across a battery of 6V, then the total current of the circuit should be |
| A. | 12A |
| B. | 3A |
| C. | 6A |
| D. | 2A |
| Answer» D. 2A | |
| 1018. |
The rate of flow of electric charge through any cross-sectional area is called |
| A. | energy |
| B. | light |
| C. | heat |
| D. | current |
| Answer» E. | |
| 1019. |
The combination in which one end of each resistor is connected with the positive terminal of the battery and the other end is connected with the negative terminal is called |
| A. | series combination |
| B. | parallel combination |
| C. | circular combination |
| D. | random combination |
| Answer» C. circular combination | |
| 1020. |
The wire maintained at high potential is known as |
| A. | Earth/ground wire |
| B. | livewire |
| C. | neutral wire |
| D. | delta wire |
| Answer» C. neutral wire | |
| 1021. |
A molded plastic disc on which digital data is stored in the form of microscopic reflecting and non-reflecting spots is known as |
| A. | audio cassette |
| B. | floppy disk |
| C. | hard disk |
| D. | compact disc |
| Answer» E. | |
| 1022. |
The geographical area covered by a signal base station is known as a |
| A. | cell |
| B. | cluster |
| C. | data |
| D. | transmitter |
| Answer» B. cluster | |
| 1023. |
The instructions or programs that tell the hardware what to do are known as |
| A. | hardware |
| B. | procedures |
| C. | data |
| D. | software |
| Answer» E. | |
| 1024. |
Audio-video cassettes and hard disk are |
| A. | primary storage devices |
| B. | temporary storage devices |
| C. | secondary storage devices |
| D. | linear storage devices |
| Answer» D. linear storage devices | |
| 1025. |
To turn voices into an electric signal that are transmitted over phone lines, modern telephone uses |
| A. | diaphragms |
| B. | mentacles |
| C. | cylinder braid |
| D. | insulating sleeve |
| Answer» B. mentacles | |
| 1026. |
The force acting on a unit positive charge placed at that point is termed as |
| A. | electric field intensity |
| B. | electric field industry |
| C. | electric field |
| D. | electric shock |
| Answer» B. electric field industry | |
| 1027. |
If the capacitance of a parallel plate capacitor is 100µ F and the potential difference is 70µ F, the quantity of charge stored on each plate would be |
| A. | 7 mC each |
| B. | 70 mC each |
| C. | 700 mC each |
| D. | 0.7 mC each |
| Answer» B. 70 mC each | |
| 1028. |
The direction of electric field intensity in an electric field can be represented by drawing |
| A. | points |
| B. | images |
| C. | circles |
| D. | lines |
| Answer» E. | |
| 1029. |
Each bolt of lightning contains about |
| A. | 2500 J of energy |
| B. | 3000 J of energy |
| C. | 1500 J of energy |
| D. | 1000 J of energy |
| Answer» E. | |
| 1030. |
If 5 J of work is needed to shift 10C of charge from one place to another. The potential difference between the places should be |
| A. | 0.5 V |
| B. | 2 V |
| C. | 5 V |
| D. | 10 V |
| Answer» B. 2 V | |
| 1031. |
An instrument which is used to display the magnitudes of changing electric currents or potentials is called |
| A. | cystoscope |
| B. | gastro-scope |
| C. | microscope |
| D. | cathode-ray oscilloscope |
| Answer» E. | |
| 1032. |
To make a burglar alarm, we can use a single |
| A. | AND gate |
| B. | OR gate |
| C. | NAND gate |
| D. | NOT gate |
| Answer» D. NOT gate | |
| 1033. |
The picture tube in our TV set and the display terminal of most computers are |
| A. | optical fibers |
| B. | cathode-ray tubes |
| C. | plastic cover |
| D. | deflecting plates |
| Answer» C. plastic cover | |
| 1034. |
NOT gate works in such a way that if its input is 1, its output would be |
| A. | 2 |
| B. | 0 |
| C. | 10 |
| D. | 1 |
| Answer» C. 10 | |
| 1035. |
The number of electrons from grid reaching the screen determines the |
| A. | brightness level |
| B. | picture quality |
| C. | sound quality |
| D. | none of above |
| Answer» B. picture quality | |
| 1036. |
To distinguish between insulators and conductors, we can use |
| A. | electroscope |
| B. | telescope |
| C. | endoscope |
| D. | fiberscope |
| Answer» B. telescope | |
| 1037. |
A capacitor holds 0.03 C of charge when fully charged by a 6V battery. To hold 2C of charge, the voltage required would be |
| A. | 150V |
| B. | 100V |
| C. | 300V |
| D. | 400V |
| Answer» E. | |
| 1038. |
The capacitance of a capacitor is 100μ F and the potential difference between plates is 50 volts then charge stored on each plate is |
| A. | 10 mC |
| B. | 5 mC |
| C. | 4 mC |
| D. | 15 mC |
| Answer» C. 4 mC | |
| 1039. |
The thunderclouds are charged by friction between |
| A. | clouds and air |
| B. | layers of clouds |
| C. | water molecules and air |
| D. | layers of air |
| Answer» D. layers of air | |
| 1040. |
The SI unit of electric potential is |
| A. | volts |
| B. | ohm |
| C. | coulomb |
| D. | newton |
| Answer» B. ohm | |
| 1041. |
The wire which carries no electricity is called |
| A. | Earth/ground wire |
| B. | livewire |
| C. | neutral wire |
| D. | delta wire |
| Answer» B. livewire | |
| 1042. |
When a bulb is lit, the energy is taken from the current and is transformed into |
| A. | heat energy only |
| B. | light energy only |
| C. | mechanical energy |
| D. | heat and light energy |
| Answer» E. | |
| 1043. |
If a charge of one coulomb passing through a cross-sectional area in one second, the current is |
| A. | two amperes |
| B. | half ampere |
| C. | one ampere |
| D. | three ampere |
| Answer» D. three ampere | |
| 1044. |
The potential difference between the live wire and the neutral wire is |
| A. | 180 V |
| B. | 320 V |
| C. | 250 V |
| D. | 220 V |
| Answer» E. | |
| 1045. |
A 50 W television and 3 kW oven are connected to a 300 V supply. The current flows in each of the appliance are respectively |
| A. | 0.16 A, 50 A |
| B. | 0.4 A, 20 A |
| C. | 14 A, 29 A |
| D. | 2.3 A, 25 A |
| Answer» B. 0.4 A, 20 A | |
| 1046. |
If I is the angle of incidence, r is the angle of refraction and n is the constant then sin I/sin r = n is known as |
| A. | Snell's law |
| B. | Newton's law |
| C. | Hooke's law |
| D. | Einstein's law |
| Answer» B. Newton's law | |
| 1047. |
A spherical mirror whose outer curved surface is reflecting is called |
| A. | convex mirror |
| B. | concave mirror |
| C. | silver mirror |
| D. | plane mirror |
| Answer» B. concave mirror | |
| 1048. |
The lens which causes incident parallel rays to converge at a point is called |
| A. | convex lens |
| B. | concave lens |
| C. | counter lens |
| D. | fiber lens |
| Answer» B. concave lens | |
| 1049. |
To illuminate the inaccessible places, doctors and engineers use |
| A. | lenses |
| B. | microscope |
| C. | endoscope |
| D. | light pipe |
| Answer» E. | |
| 1050. |
The ray passing through the optical center passes straight through the lens and |
| A. | remains undeviated |
| B. | straight |
| C. | deviated |
| D. | none of above |
| Answer» B. straight | |