MCQOPTIONS
Saved Bookmarks
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.
| 801. |
The agency which provides the potential difference for the steady flow of current in the copper wire is the |
| A. | battery |
| B. | voltmeter |
| C. | galvanometer |
| D. | ammeter |
| Answer» B. voltmeter | |
| 802. |
The time interval after which the alternative current voltage or current repeats its value is called its |
| A. | frequency |
| B. | time period |
| C. | amplitude |
| D. | wavelength |
| Answer» C. amplitude | |
| 803. |
In metals, the current is produced due to the flow of |
| A. | positive charges |
| B. | negative charges |
| C. | no charges |
| D. | partially charges |
| Answer» C. no charges | |
| 804. |
To pass the maximum current in the circuit, an ideal galvanometer should have |
| A. | large resistance |
| B. | very small resistance |
| C. | no resistance |
| D. | none of above |
| Answer» C. no resistance | |
| 805. |
Resistors are connected end to end in |
| A. | series combination |
| B. | parallel combination |
| C. | circular combination |
| D. | random combination |
| Answer» B. parallel combination | |
| 806. |
In C.R.O, the grid is connected to the |
| A. | positive potential |
| B. | negative potential |
| C. | Alternating current (AC) source |
| D. | Direct current (DC) source |
| Answer» C. Alternating current (AC) source | |
| 807. |
The circuit which implements the AND operation is known as |
| A. | AND gate |
| B. | OR gate |
| C. | NAND gate |
| D. | NOT gate |
| Answer» B. OR gate | |
| 808. |
Electronic systems used at present consist of |
| A. | both analogue and digital circuits |
| B. | digital circuits |
| C. | no circuits |
| D. | analogue circuits |
| Answer» B. digital circuits | |
| 809. |
At room temperature, the electron cannot escape metal surface due to |
| A. | attractive forces of nucleus |
| B. | repulsive forces of electrons |
| C. | repulsive forces of nucleus |
| D. | pulling force of protons |
| Answer» B. repulsive forces of electrons | |
| 810. |
The degree of deflection of electrons is directly proportional to |
| A. | current |
| B. | voltage |
| C. | strength of electric field |
| D. | resistance |
| Answer» D. resistance | |
| 811. |
A byte is equal to |
| A. | 10 bits |
| B. | 15 bits |
| C. | 12 bits |
| D. | 8 bits |
| Answer» E. | |
| 812. |
A bit represents data using |
| A. | 0, 1 |
| B. | 1, 2 |
| C. | 1, 10 |
| D. | 0, 10 |
| Answer» B. 1, 2 | |
| 813. |
Digital circuits perform the binary arithmetic operations known as |
| A. | variety operations |
| B. | logical operations |
| C. | binary operations |
| D. | fundamental operations |
| Answer» C. binary operations | |
| 814. |
The electrode to control the flow of electrons in the beam of an electron gun is called |
| A. | pitch |
| B. | grid |
| C. | plate |
| D. | cable |
| Answer» C. plate | |
| 815. |
Across 2 parallel metal plates placed horizontally separated by some distance, we can set up the electric field by applying a |
| A. | magnetic difference |
| B. | potential difference |
| C. | electronic difference |
| D. | emission rays |
| Answer» C. electronic difference | |
| 816. |
The time T of the simple harmonic motion of a mass m attached to a spring is given by |
| A. | T = 2π √(k/m) |
| B. | T = 2π √(m/k) |
| C. | T = π √(k/m) |
| D. | T = 2π √(m+k) |
| Answer» C. T = π √(k/m) | |
| 817. |
If 160 waves pass through a point of a medium in 40 seconds. Its frequency is |
| A. | 4 Hz |
| B. | 2 Hz |
| C. | 5 Hz |
| D. | 3 Hz |
| Answer» B. 2 Hz | |
| 818. |
The characteristic of wave independent of others is |
| A. | frequency |
| B. | speed |
| C. | wavelength |
| D. | amplitude |
| Answer» E. | |
| 819. |
If the mass of bob is increased 3 times then it's period |
| A. | increases |
| B. | decreases 2 times |
| C. | remains same |
| D. | increases 4 times |
| Answer» D. increases 4 times | |
| 820. |
The speed of a wave in water depends on the |
| A. | depth of tank |
| B. | temperature |
| C. | depth of water |
| D. | none of above |
| Answer» D. none of above | |
| 821. |
The incident ray, the normal and the reflected ray at the point of incidence all lie in the same plane. This is the law of |
| A. | reflection |
| B. | refraction |
| C. | defraction |
| D. | acoustics |
| Answer» B. refraction | |
| 822. |
The angle of incidence and angle of reflection is |
| A. | equal |
| B. | un equal |
| C. | coherent |
| D. | opposite |
| Answer» B. un equal | |
| 823. |
When the angle of incidence becomes larger than the critical angle, then |
| A. | refraction occurs |
| B. | reflection occurs |
| C. | defraction occurs |
| D. | no refraction occurs |
| Answer» E. | |
| 824. |
In different media, refraction of light is caused by the difference in speed of |
| A. | sound |
| B. | light |
| C. | heat |
| D. | waves |
| Answer» B. light | |
| 825. |
An object 4 cm high is placed at a distance of 12 cm from a concave lens, If the focal length is 8 cm then the size of the object is |
| A. | 10 cm |
| B. | 5 cm |
| C. | 4 cm |
| D. | 8 cm |
| Answer» E. | |
| 826. |
As compare to air, sound waves travel |
| A. | 3 times faster |
| B. | 5 times slower |
| C. | 5 times faster |
| D. | 2 times lower |
| Answer» D. 2 times lower | |
| 827. |
Human voice results from the vibration of |
| A. | ears |
| B. | heart |
| C. | vocal chords |
| D. | muscles |
| Answer» D. muscles | |
| 828. |
If a nurse counts 68 heartbeats in 1 minute, then the period of heartbeats should be |
| A. | 1.9 s |
| B. | 2 s |
| C. | 0.88 s |
| D. | 3 s |
| Answer» D. 3 s | |
| 829. |
The level of noise recommended in most countries over an eight-hour workday is usually |
| A. | 65-70 dB |
| B. | 85-90 dB |
| C. | 75-80 dB |
| D. | 45-50 dB |
| Answer» C. 75-80 dB | |
| 830. |
A normal conversation have sound intensities of 3×10-6Wm-2. The decibel level for the intensity is |
| A. | 50 dB |
| B. | 64.8 dB |
| C. | 70.5 dB |
| D. | 48.8 dB |
| Answer» C. 70.5 dB | |
| 831. |
A device to produce water waves and to study their characteristics is known as |
| A. | screw gauge |
| B. | ripple tank |
| C. | measuring cylinder |
| D. | wave container |
| Answer» C. measuring cylinder | |
| 832. |
A human ear can oscillate back and forth up to |
| A. | 18,000 times per second |
| B. | 200 times per second |
| C. | 20,000 times per second |
| D. | 100 times per second |
| Answer» D. 100 times per second | |
| 833. |
The potential energy of mass attached to spring at extreme position is |
| A. | maximum |
| B. | minimum |
| C. | zero |
| D. | moderate |
| Answer» B. minimum | |
| 834. |
If a simple pendulum is 1.0 m long and force of gravity acting on it is 10.0 ms-2, then it's time period and frequency are |
| A. | 1.99s and 0.50Hz |
| B. | 2s and 60Hz |
| C. | 5s and 40Hz |
| D. | 4s and 60Hz |
| Answer» B. 2s and 60Hz | |
| 835. |
The force that pulls the mass towards mean position is called |
| A. | Gravitational force |
| B. | Frictional force |
| C. | Torque |
| D. | Restoring force |
| Answer» E. | |
| 836. |
Sound is produced by |
| A. | vibrating bodies |
| B. | transferring signals |
| C. | reflection of waves |
| D. | deflection of waves |
| Answer» B. transferring signals | |
| 837. |
The difference between the loudness of the unknown sound and the loudness is |
| A. | intensity level of unknown sound |
| B. | intensity level of known sound |
| C. | quality of sound |
| D. | pitch of sound |
| Answer» B. intensity level of known sound | |
| 838. |
As compared to men, the frequency of the voice of ladies and kids is |
| A. | equal |
| B. | higher |
| C. | lower |
| D. | negative |
| Answer» C. lower | |
| 839. |
From the following, the example of a longitudinal wave is |
| A. | radio wave |
| B. | sound wave |
| C. | water wave |
| D. | heat wave |
| Answer» C. water wave | |
| 840. |
Bats can hear frequencies up to |
| A. | 30,000 Hz |
| B. | 120,000 Hz |
| C. | 180,000 Hz |
| D. | 15,000 Hz |
| Answer» C. 180,000 Hz | |
| 841. |
A pendulum of length 0.65 m is taken to the moon. The period is 5.2 s. The value of "g" on the surface of the moon is |
| A. | 1.5 ms-2 |
| B. | 0.948 ms-2 |
| C. | 0.35 ms-2 |
| D. | 2.35 ms-2 |
| Answer» C. 0.35 ms-2 | |
| 842. |
Time taken by a body to complete one vibration is |
| A. | amplitude |
| B. | frequency |
| C. | time period |
| D. | vibration |
| Answer» D. vibration | |
| 843. |
The velocity of simple harmonic motion at the extreme position is always |
| A. | maximum |
| B. | minimum |
| C. | zero |
| D. | negative |
| Answer» D. negative | |
| 844. |
From one place to another, through waves, we can transfer |
| A. | heat |
| B. | energy |
| C. | sound |
| D. | gas |
| Answer» C. sound | |
| 845. |
When friction reduces the mechanical energy of the system as time passes, the motion is said to be |
| A. | simple |
| B. | damped |
| C. | random |
| D. | linear |
| Answer» C. random | |
| 846. |
If the resistance of an electric bulb is 1000Ω and the potential difference is 500 V. The power consumed by the bulb should be |
| A. | 100 W |
| B. | 200 W |
| C. | 125 W |
| D. | 300 W |
| Answer» D. 300 W | |
| 847. |
The process during which charges continuously move from a higher potential to a lower potential becomes a continuous source of |
| A. | heat energy |
| B. | light energy |
| C. | chemical energy |
| D. | electrical energy |
| Answer» E. | |
| 848. |
If the resistance of a metal wire is 10Ω and a potential difference is 100 volts. The value of the current is |
| A. | 0.05 mA |
| B. | 0.01 mA |
| C. | 0.06 mA |
| D. | 0.2 mA |
| Answer» C. 0.06 mA | |
| 849. |
An electric instrument which measures larger current and always connected in series in a circuit is termed as |
| A. | Vernier calipers |
| B. | galvanometer |
| C. | ammeter |
| D. | voltmeter |
| Answer» D. voltmeter | |
| 850. |
The color of the earth wire is |
| A. | red or brown |
| B. | green or yellow |
| C. | black or blue |
| D. | white or pink |
| Answer» C. black or blue | |