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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.
| 901. |
The strength of radiations to penetrate a certain material is known as |
| A. | splitting power |
| B. | ionization power |
| C. | penetrating power |
| D. | radiation power |
| Answer» D. radiation power | |
| 902. |
Radioisotope for treating cancer tumors and cells is |
| A. | Phosphorous-32 |
| B. | carbon-14 |
| C. | cobalt-60 |
| D. | cobalt-59 |
| Answer» D. cobalt-59 | |
| 903. |
The activity of a sample of radioactive bismuth decreases to one-eighth of the original in 15 days. Its half-life is |
| A. | 10 days |
| B. | 15 days |
| C. | 3 days |
| D. | 5 days |
| Answer» E. | |
| 904. |
The activity of 1 g of radium is |
| A. | 3.73 * 104MBq |
| B. | 2.76 MBq |
| C. | 3.0 MBq |
| D. | 5.9 MBq |
| Answer» B. 2.76 MBq | |
| 905. |
The SI unit for radioactivity is |
| A. | farad |
| B. | Pascal |
| C. | Becquerel |
| D. | ammeter |
| Answer» D. ammeter | |
| 906. |
The half-life of carbon-14 is |
| A. | 1359 years |
| B. | 4860 years |
| C. | 5730 years |
| D. | 2890 years |
| Answer» D. 2890 years | |
| 907. |
The spontaneous emission of radiation by unstable nuclei is called |
| A. | positive radioactivity |
| B. | artificial radioactivity |
| C. | natural radioactivity |
| D. | negative radioactivity |
| Answer» D. negative radioactivity | |
| 908. |
Cosmic radiations interact with atoms atmosphere to create |
| A. | primary radiation |
| B. | secondary radiation |
| C. | tertiary radiation |
| D. | no radiation at all |
| Answer» C. tertiary radiation | |
| 909. |
When alpha and beta particles are slowed down by collisions, they become |
| A. | harmful |
| B. | harmless |
| C. | useful |
| D. | expensive |
| Answer» C. useful | |
| 910. |
Radiations burn mainly due to |
| A. | alpha radiations |
| B. | beta radiations |
| C. | gamma radiations |
| D. | beta and gamma radiations |
| Answer» E. | |
| 911. |
The to and fro oscillatory motion in which acceleration of the body is directly proportional to the displacement of the body from the mean position and is always directed towards the mean position is known as |
| A. | compressional motion |
| B. | damped motion |
| C. | simple harmonic motion |
| D. | none of above |
| Answer» D. none of above | |
| 912. |
A disturbance in the medium which causes the particles of the medium to undergo vibratory motion about their mean position in equal intervals of time is known as |
| A. | wave |
| B. | energy |
| C. | vibration |
| D. | amplitude |
| Answer» B. energy | |
| 913. |
The number of vibrations of a body in one sec is called |
| A. | frequency |
| B. | amplitude |
| C. | time period |
| D. | vibration |
| Answer» B. amplitude | |
| 914. |
The mechanical waves in which particles of the medium vibrate about their mean position perpendicular to the direction of propagation of the waves are called |
| A. | transverse waves |
| B. | longitudinal waves |
| C. | mechanical waves |
| D. | electromagnetic waves |
| Answer» B. longitudinal waves | |
| 915. |
Longitudinal waves move faster through |
| A. | liquids |
| B. | gases |
| C. | solids |
| D. | none of above |
| Answer» D. none of above | |
| 916. |
One complete round trip of a vibrating body about its mean position is called one |
| A. | wave length |
| B. | time period |
| C. | amplitude |
| D. | vibration |
| Answer» E. | |
| 917. |
Water waves and sound waves are the examples of |
| A. | transverse waves |
| B. | longitudinal waves |
| C. | mechanical waves |
| D. | electromagnetic waves |
| Answer» D. electromagnetic waves | |
| 918. |
When waves moving in one medium fall on the surface of another medium they bounce back into the first medium such that the angle of incidence is equal to the angle of reflection. This phenomenon is known as |
| A. | refraction of waves |
| B. | diffraction of waves |
| C. | reflection of waves |
| D. | deflection of waves |
| Answer» D. deflection of waves | |
| 919. |
Time taken by the simple pendulum to complete one cycle is called its |
| A. | time period |
| B. | amplitude |
| C. | frequency |
| D. | wave length |
| Answer» B. amplitude | |
| 920. |
Energy can be transferred from one place to another through |
| A. | linear motion |
| B. | circular motion |
| C. | force |
| D. | waves |
| Answer» E. | |
| 921. |
An example of the simple harmonic motion is the |
| A. | motion of simple pendulum |
| B. | motion of ceiling fan |
| C. | bouncing ball on floor |
| D. | spinning of Earth on its axis |
| Answer» B. motion of ceiling fan | |
| 922. |
One complete round trip of a vibrating body about its mean position is |
| A. | frequency |
| B. | time period |
| C. | amplitude |
| D. | vibration |
| Answer» E. | |
| 923. |
Heatwaves are |
| A. | electromagnetic |
| B. | mechanical |
| C. | transverse |
| D. | chemical waves |
| Answer» C. transverse | |
| 924. |
If speed of radio wave is 4×108ms-1, where 1M = 106. The wavelength of the radio waves transmitted at 80Mhz will be |
| A. | 6 m |
| B. | 10 m |
| C. | 8 m |
| D. | 5 m |
| Answer» E. | |
| 925. |
According to Hooke's law, the force is directly proportional to change in |
| A. | length |
| B. | area |
| C. | volume |
| D. | mass |
| Answer» B. area | |
| 926. |
A wave moves on a slinky with a frequency of 5 Hz and a wavelength of 0.6 m. The speed of the wave is |
| A. | 3 ms-1 |
| B. | 2 ms-1 |
| C. | 8.3 ms-1 |
| D. | 0.12 ms-1 |
| Answer» B. 2 ms-1 | |
| 927. |
According to Hooke's Law, the force is directly proportional to the |
| A. | time |
| B. | change in length |
| C. | speed |
| D. | velocity |
| Answer» C. speed | |
| 928. |
The potential energy of mass attached to spring at mean position is |
| A. | maximum |
| B. | moderate |
| C. | zero |
| D. | minimum |
| Answer» D. minimum | |
| 929. |
The frequency of simple pendulum 1 m long at a location where T = 1.99 s will be |
| A. | 0.5 Hz |
| B. | 2 Hz |
| C. | 2.6 Hz |
| D. | 3 Hz |
| Answer» B. 2 Hz | |
| 930. |
The reciprocal of the time is |
| A. | amplitude |
| B. | frequency |
| C. | wave length |
| D. | speed |
| Answer» C. wave length | |
| 931. |
A very large unit of electric energy is needed which is called |
| A. | watt-hour |
| B. | kilowatt-hour |
| C. | kilogram-second |
| D. | kilowatt-second |
| Answer» C. kilogram-second | |
| 932. |
All materials contain |
| A. | some gas |
| B. | capacitors |
| C. | voltage |
| D. | electrons |
| Answer» E. | |
| 933. |
The current flowing from positive to the negative terminal of a battery due to the flow of positive charges is known as |
| A. | electromotive current |
| B. | resolving current |
| C. | potential current |
| D. | conventional current |
| Answer» E. | |
| 934. |
The insulations around wires are damaged due to |
| A. | less current |
| B. | less voltage |
| C. | high current |
| D. | high voltage |
| Answer» D. high voltage | |
| 935. |
If 0.6 C charge passes through a wire in 12 s, then the current flowing through the wire is |
| A. | 70 mA |
| B. | 60 mA |
| C. | 50 mA |
| D. | 25 mA |
| Answer» D. 25 mA | |
| 936. |
If the electromotive force of the battery is 5 V, the total energy supplied by the battery is |
| A. | 2.5 joules |
| B. | 5 joules |
| C. | 1 joule |
| D. | 10 joules |
| Answer» C. 1 joule | |
| 937. |
Due to the flow of positive or negative charges or both charges at the same time |
| A. | electric current is produced |
| B. | light is produced |
| C. | heat is produced |
| D. | air is produced |
| Answer» B. light is produced | |
| 938. |
The materials having a nonlinear voltage-current relationship are |
| A. | ohmic |
| B. | non-ohmic |
| C. | batteries |
| D. | capacitors |
| Answer» C. batteries | |
| 939. |
In SI unit, JC-1 is equal to |
| A. | volt |
| B. | Newton's law |
| C. | Pascal |
| D. | omega |
| Answer» B. Newton's law | |
| 940. |
The amount of energy delivered by the power of one kilowatt in one hour is called |
| A. | kilogram-second |
| B. | kilowatt-second |
| C. | watt-hour |
| D. | kilowatt-hour |
| Answer» E. | |
| 941. |
The charge stored on plates of capacitors is directly proportional to the |
| A. | potential difference |
| B. | electric field industry |
| C. | electric field |
| D. | electric field intensity |
| Answer» B. electric field industry | |
| 942. |
If mica and woolen cloth are rubbed together, then mica gets |
| A. | positively charged |
| B. | negatively charged |
| C. | remains neutral |
| D. | dual charged |
| Answer» B. negatively charged | |
| 943. |
The energy supplied by a unit charge as it moves from one point to the other in the direction of the field is called |
| A. | potential difference |
| B. | electric field industry |
| C. | electric field |
| D. | electric field intensity |
| Answer» B. electric field industry | |
| 944. |
The electric charge between two bodies can be produced by |
| A. | sticking |
| B. | rubbing |
| C. | oiling |
| D. | passing AC current |
| Answer» C. oiling | |
| 945. |
If we bring charged plastic rod near-neutral aluminum rod, then rods will |
| A. | repel each other |
| B. | attract each other |
| C. | remain their position |
| D. | exchange charges |
| Answer» C. remain their position | |
| 946. |
Both bats and dolphins can “see” using |
| A. | electric waves |
| B. | light waves |
| C. | heat waves |
| D. | sound waves |
| Answer» E. | |
| 947. |
Sound waves cannot pass through |
| A. | air |
| B. | vacuum |
| C. | solid |
| D. | liquid |
| Answer» C. solid | |
| 948. |
The total distance covered by a sound wave from the generation point to reflecting surface and back should be |
| A. | 17m |
| B. | 34m |
| C. | 15m |
| D. | 10m |
| Answer» C. 15m | |
| 949. |
1 bel is equal to |
| A. | 100 dB |
| B. | 1000 dB |
| C. | 10 dB |
| D. | 20 dB |
| Answer» D. 20 dB | |
| 950. |
When sound interacts with materials and boundaries, it displays all the properties of |
| A. | heat |
| B. | waves |
| C. | light |
| D. | electricity |
| Answer» C. light | |