Which among the following waves is used for communication by artificial satellites ? (1) Micro waves (2) Radio waves (3) A. M. (4) Frequency of 1016 series

Which among the following waves is used for communication by artificial satellites ? (1) Micro waves (2) Radio waves (3) A. M. (4) Frequency of 1016 series 

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Micro waves
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Which among the following waves is used for communication by artificial satellites? (1) Micro waves (2) Radio waves (3) A. M. (4) Frequency of 1016 series

Description : Which among the following waves is used for communication by artificial satellites? (1) Micro waves (2) Radio waves (3) A. M. (4) Frequency of 1016 series

Last Answer : (1) Micro waves Explanation: For fixed (point-to-point) services, communications satellites provide a microwave radio relay technology complementary to that of communication cables. They are also used ... is extensively used for point-to-point telecommunications (i.e., non broadcast uses).

Which waves are used for a communication through artificial satellites? -Do You Know?

Description : Which waves are used for a communication through artificial satellites? -Do You Know?

Last Answer : answer:

Which waves are used for a communication through artificial satellites?

Description : Which waves are used for a communication through artificial satellites?

Last Answer : Microwaves

Coolis tube is used to produce – (1) Radio waves (2) Micro waves (3) X-rays (4) Gama rays

Description : Coolis tube is used to produce – (1) Radio waves (2) Micro waves (3) X-rays (4) Gama rays

Last Answer : (3) X-rays Explanation: X-rays are part of the electromagnetic spectrum, an ionizing radiation with wavelengths shorter than ultraviolet light. X-ray tubes evolved from experimental Crookes tubes ... X-rays created the field of radiography, the imaging of opaque objects with penetrating radiation.

Coolis tube is used to produce (1) Radio waves (2) Micro waves (3) X-rays (4) Gama rays

Description : Coolis tube is used to produce (1) Radio waves (2) Micro waves (3) X-rays (4) Gama rays

Last Answer : X-rays

Ozone layer in the outer atmosphere helps us in – (1) reflecting radio waves and makes radio communication possible (2) regulating he temperature of atmosphere (3) absorbing cosmic ray particles (4) absorbing U-V radiations

Description : Ozone layer in the outer atmosphere helps us in – (1) reflecting radio waves and makes radio communication possible (2) regulating he temperature of atmosphere (3) absorbing cosmic ray particles (4) absorbing U-V radiations

Last Answer : (4) absorbing U-V radiations Explanation: The ozone layer is a layer in Earth's atmosphere containing relatively high concentrations of ozone (03) which absorbs 97- 99% of the Sun's medium-frequency ultraviolet light.

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Last Answer : (3) Radio waves Explanation: Wireless communication is the transfer of information between two or more points that are not connected by an electrical conductor. With radio waves distances can be short ... , or as far as thousands or even millions of kilometres for deep-space radio communications.

Ozone layer in the outer atmosphere helps us in (1) reflecting radio waves and makes radio communication possible (2) regulating the temperature of atmosphere (3) absorbing cosmic ray particles (4) absorbing U-V radiations

Description : Ozone layer in the outer atmosphere helps us in (1) reflecting radio waves and makes radio communication possible (2) regulating the temperature of atmosphere (3) absorbing cosmic ray particles (4) absorbing U-V radiations

Last Answer :  absorbing U-V radiations

Waves that are required for long distance wireless communication are (1) Infrared rays (2) Ultraviolet rays (3) Radio waves (4) Microwaves

Description : Waves that are required for long distance wireless communication are (1) Infrared rays (2) Ultraviolet rays (3) Radio waves (4) Microwaves

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To measure the speed of an approaching car a police officer shines – (1) light waves on it (2) microwaves on it (3) radio waves on it (4) ultra high frequency waves on it

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Description : As compared to sound waves the frequency of radio waves is A. lower B. higher C. equal D. may be higher or lower

Last Answer : higher

Which wave has the highest frequency? w) microwaves x) infrared waves y) ultraviolet waves z) radio waves

Description : Which wave has the highest frequency? w) microwaves x) infrared waves y) ultraviolet waves z) radio waves

Last Answer : ANSWER: Y -- ULTRAVIOLET WAVES

To measure the speed of an approaching car a police officer shines (1) light waves on it (2) microwaves on it (3) radio waves on it (4) ultra high frequency waves on it

Description : To measure the speed of an approaching car a police officer shines (1) light waves on it (2) microwaves on it (3) radio waves on it (4) ultra high frequency waves on it

Last Answer : radio waves on it

A mobile phone sends and receives messages through _____. A. Radio waves B. Ultraviolet waves C. Micro waves D. Sound waves

Description : A mobile phone sends and receives messages through _____. A. Radio waves B. Ultraviolet waves C. Micro waves D. Sound waves

Last Answer : ANSWER: A

A mobile phone sends and receives messages through _____. A. Radio waves B. Ultraviolet waves C. Micro waves D. Sound waves

Description : A mobile phone sends and receives messages through _____. A. Radio waves B. Ultraviolet waves C. Micro waves D. Sound waves

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A mobile phone sends and receives messages through _____. A. Radio waves B. Ultraviolet waves C. Micro waves D. Sound waves

Description : A mobile phone sends and receives messages through _____. A. Radio waves B. Ultraviolet waves C. Micro waves D. Sound waves

Last Answer : ANSWER: A

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Description : Lagoons used for purification of polluted water (A) Are large shallow artificial lakes also known as clarification lakes, maturation ponds or oxidation ponds (B) Use micro-organisms/bacteria in presence of dissolved oxygen (C) Gives an ... 1 mg/litre and BOD = 3.8 mg/litre (D) All (A), (B) & (C)

Last Answer : (D) All (A), (B) & (C)

First communication satellites used frequencies of A. 6 GHz for uplink B. 3 GHz for uplink C. 6 GHz for downlink D. 5 GHz for downlink

Description : First communication satellites used frequencies of A. 6 GHz for uplink B. 3 GHz for uplink C. 6 GHz for downlink D. 5 GHz for downlink

Last Answer : 6 GHz for uplink

What is the equivalent ratio to 1016?

Description : What is the equivalent ratio to 1016?

Last Answer : If you mean 10 and 16 then it is 5 and 8

1 British thermal unit (BTU) is equivalent to how many joules?  A. 1016  B. 1043  C. 1023  D. 1054

Description : 1 British thermal unit (BTU) is equivalent to how many joules?  A. 1016  B. 1043  C. 1023  D. 1054

Last Answer : 1054

The hexadecimal equivalent of decimal 21 is ________. 105) A) 1516 B) 1016 C) 2116 D) 1216

Description : The hexadecimal equivalent of decimal 21 is ________. 105) A) 1516 B) 1016 C) 2116 D) 1216

Last Answer : A) 1516

Pick out the wrong statement (A) The concentric atmosphere layer just above troposphere is called stratosphere, which is rich in ozone (B) Mesosphere is characterised by very low atmospheric pressure and low temperature (C) Troposphere is a dusty zone containing water vapor and clouds (D) The radio waves used in the long distance radio communication are reflected back to earth by stratosphere

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Last Answer : (D) The radio waves used in the long distance radio communication are reflected back to earth by stratosphere

What type of communication use Radio waves:

Description : What type of communication use Radio waves:  a. Unicast b. Both (a) and (c) can be used c. Multicast d. None of the above 

Last Answer : What type of communication use Radio waves: Multicast 

The basic element of radio communication system which generates radio waves is

Description : The basic element of radio communication system which generates radio waves is  1. micro phone 2. transmitter 3.transmitting antenna 4. Loudspeaker 

Last Answer : The basic element of radio communication system which generates radio waves is transmitter 

Bats can sense obstacles because they produce – (1) supersonic sound waves (2) ultrasonic sound waves (3) infrasonic sound waves (4) micro sound waves

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The waves used in sonography are – (1) Micro waves (2) Infra-red waves (3) Sound waves (4) Ultrasonic waves

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Description : The waves used in sonography are (1) Micro waves (2) Infra-red waves (3) Sound waves (4) Ultrasonic waves 

Last Answer : Ultrasonic waves

Bats can sense obstacles because they produce (1) supersonic sound waves (2) ultrasonic sound waves (3) infrasonic sound waves (4) micro sound waves

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Last Answer : ultrasonic sound waves

How are the artificial satellites located in the sky ?? Why not fall down ?

Description : How are the artificial satellites located in the sky ?? Why not fall down ?

Last Answer : A satellite that is sent into space and keeps moving. That is, once it is in motion, it will remain in motion for life and will never stop. So as not to fall down. If an object, not just a satellite, is sent ... \ / "" (R + h) * 3 / GM is working on a theory of release speed and space is possible.

What is the number of artificial satellites in India ?

Description : What is the number of artificial satellites in India ?

Last Answer : 6 Indian satellites. (Source: Jugantar , May 24 , 2019)

On what basis did technologists place artificial satellites in space ?

Description : On what basis did technologists place artificial satellites in space ?

Last Answer : Technologists have set up artificial satellites in space based on the rotational speed of the earth and the force of attraction that acts between the earth and other objects in space.

What does Sending out a pulse of high frequency radio waves?

Description : What does Sending out a pulse of high frequency radio waves?

Last Answer : Need answer

What Palindromes for Sending out a pulse of high frequency radio waves?

Description : What Palindromes for Sending out a pulse of high frequency radio waves?

Last Answer : radar

Radar transmits short pulses of high frequency called A. Infrared waves B. Radio waves C. Ultraviolet waves D. Sound waves

Description : Radar transmits short pulses of high frequency called A. Infrared waves B. Radio waves C. Ultraviolet waves D. Sound waves

Last Answer : ANSWER: B

Radar transmits short pulses of high frequency called A. Infrared waves B. Radio waves C. Ultraviolet waves D. Sound waves

Description : Radar transmits short pulses of high frequency called A. Infrared waves B. Radio waves C. Ultraviolet waves D. Sound waves

Last Answer : ANSWER: B

Radar transmits short pulses of high frequency called A. Infrared waves B. Radio waves C. Ultraviolet waves D. Sound waves

Description : Radar transmits short pulses of high frequency called A. Infrared waves B. Radio waves C. Ultraviolet waves D. Sound waves

Last Answer : ANSWER: B

The carrier waves used for the radio transmission have frequency upto A. 15 KHz B. 30 KHz C. 90 KHz D. 150 KHz

Description : The carrier waves used for the radio transmission have frequency upto A. 15 KHz B. 30 KHz C. 90 KHz D. 150 KHz

Last Answer : ANSWER: B

Radar transmits short pulses of high frequency called A. Infrared waves B. Radio waves C. Ultraviolet waves D. Sound waves

Description : Radar transmits short pulses of high frequency called A. Infrared waves B. Radio waves C. Ultraviolet waves D. Sound waves

Last Answer : ANSWER: B

Infiber optics, thesignal is_______ waves. A) light B) radio C) infrared D) very low-frequency

Description : Infiber optics, thesignal is_______ waves. A) light B) radio C) infrared D) very low-frequency

Last Answer : light

Geodimeter is based on: (A) Propagation of modulated light waves (B) Propagation of infrared radiation (C) The visible light as carrier with frequency of the order of 5 × 1014 Hz (D) High frequency radio waves

Description : Geodimeter is based on: (A) Propagation of modulated light waves (B) Propagation of infrared radiation (C) The visible light as carrier with frequency of the order of 5 × 1014 Hz (D) High frequency radio waves

Last Answer : Answer: Option A

Which radio frequency bands use the tropospheric scattering principle for propagation of radio waves?

Description : Which radio frequency bands use the tropospheric scattering principle for propagation of radio waves?

Last Answer : Vhf and above

There is a maximum frequency at which vertically transmitted radio waves can be refracted back to Earth. What is this maximum frequency called?

Description : There is a maximum frequency at which vertically transmitted radio waves can be refracted back to Earth. What is this maximum frequency called?

Last Answer : Critical frequency.

Radar is used to (1) locate submerged submarines. (2) receive signal from radio receivers. (3) detect and locate distant objects. (4) locate geostationary satellites.

Description : Radar is used to (1) locate submerged submarines. (2) receive signal from radio receivers. (3) detect and locate distant objects. (4) locate geostationary satellites.

Last Answer :  detect and locate distant objects

What type of radio waves ?

Description : What type of radio waves ?

Last Answer : Radio waves are a type of electromagnetic waves.

X-rays region lies between – (1) Ultraviolet and visible region (2) Visible and infra-red region (3) Gamma-rays and ultraviolet region (4) Short radio waves and long radio waves

Description : X-rays region lies between – (1) Ultraviolet and visible region (2) Visible and infra-red region (3) Gamma-rays and ultraviolet region (4) Short radio waves and long radio waves

Last Answer : (3) Gamma-rays and ultraviolet region Explanation: X-rays region lies between Gamma rays and ultra-violet region.

Why are we able to hear short wave broadcasts better than long wave broadcasts? (1) Short waves are more energetic than long waves (2) Short waves are unaffected by atmospheric disturbances (3) Short wave broadcasts are made by nearby radio stations (4) By convention, short waves are meant for long distances, whereas long waves are reserved for short distances

Description : Why are we able to hear short wave broadcasts better than long wave broadcasts? (1) Short waves are more energetic than long waves (2) Short waves are unaffected by atmospheric disturbances ... convention, short waves are meant for long distances, whereas long waves are reserved for short distances

Last Answer : (1) Short waves are more energetic than long waves Explanation: Shortwave radio is used for broadcasting of voice and music, and longdistance communication to ships and aircraft, or to remote areas ... wired communication or other radio services and that's why it is more energetic than long waves.

Which of the following is used in oven? (1) X-rays (2) UV-rays (3) Microwaves (4) Radio waves

Description : Which of the following is used in oven? (1) X-rays (2) UV-rays (3) Microwaves (4) Radio waves

Last Answer : (3) Microwaves Explanation: An oven is a thermally insulated chamber used for the heating, baking or drying of a substance and most commonly used for cooking.

What do radioactive substances emit? (1) Radio waves (2) Infrared waves (3) Ultraviolet waves (4) α, β and γ rays

Description : What do radioactive substances emit? (1) Radio waves (2) Infrared waves (3) Ultraviolet waves (4) α, β and γ rays

Last Answer : (4) α, β and γ rays Explanation: Of the three main types of radiation given off during radioactive decay, two are particles and one is energy; scientists call them alpha, beta and gamma after the first three letters of the Greek alphabet.

Light Emitting Diodes (LED) is used in fancy electronic devices such as toys emit (1) X-rays (2) ultraviolet light (3) (4) All of the above (4) radio waves

Description : Light Emitting Diodes (LED) is used in fancy electronic devices such as toys emit (1) X-rays (2) ultraviolet light (3) (4) All of the above (4) radio waves

Last Answer : (4) All of the above Explanation: A light-emitting diode (LED) is a semiconductor light source that emits light when current flows through it. Infrared LEDs are used in remote-control circuits, such as those used with a wide variety of consumer electronics.

Which of the following waves cannot be polarized? (1) Radio (2) Ultra violet (3) Infrared (4) Ultrasonic

Description : Which of the following waves cannot be polarized? (1) Radio (2) Ultra violet (3) Infrared (4) Ultrasonic

Last Answer : (4) Ultrasonic Explanation: Only transverse waves (such as radio, ultraviolet and infrared waves) can be polarized since their vibrations can potentially occur in all directions perpendicular to the direction of travel. It is therefore possible to confine the vibrations to a single plane.