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

1 Answer

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.

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

Last Answer : (3) Microwaves Explanation: An oven that uses micro radiation waves as a source of heat in order to cook food as opposed to a fire source. Conceptualized in 1946, Dr. Perry ... appliance that heats food by dielectric heating accomplished with radiation used to heat polarized molecules in food.

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

Last Answer : Microwaves

Description : Radio waves, microwaves, infra-red spectrum, ultraviolet rays, X-rays and gamma rays are classified as ______. (1) light waves (2) electromagnetic waves (3) electric waves (4) magnetic waves

Last Answer : (2) electromagnetic waves Explanation: Electromagnetic radiation is the radiant energy released by certain electromagnetic processes. It consists of electromagnetic waves which are synchronized oscillations of electric and magnetic fields that propagate at the speed of light through a vacuum.

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

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.

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

Last Answer : 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

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 : (3) radio waves on it Explanation: Radar, which stands for radio detection and ranging, is a system that uses reflected radio waves to detect objects and measure their distance and speed. For example, police use radar to calculate the speed of cars.

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

Description : ________ are usedfor short-range communications such as those between a PC and aperipheral device. A) Radio waves B) Microwaves C) Infrared waves D) none of the above

Last Answer : Infrared waves

Description : _____ are used for cellular phone, satellite,and wireless LAN communications. A) Radio waves B) Microwaves C) Infrared waves D) none of the above

Last Answer : Microwaves

Description : …….are used for short-range communications such as those between a PC and aperipheral device. a. Radio waves b. None of These c. Microwaves d. Infrared waves

Last Answer : d. Infrared waves

Description : ……………are used for cellular phone, satellite, and wireless LAN communications. a. Microwaves b. Radio waves c. None of these d. Infrared waves

Last Answer : a. Microwaves

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.

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.

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.

Description : Which of the following does NOT travel in a vacuum? w) radio waves x) gamma rays y) magnetic waves z) sound waves

Last Answer : ANSWER: Z -- SOUND 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 : Gamma-rays and ultraviolet region

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

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Description : The radiation initially produced in fluorescent tube is – (1) infrared (2) ultraviolet (3) microwaves (4) X-rays

Last Answer : (2) ultraviolet Explanation: The primary radiation that is initially produced within a fluorescent lamp is analogous to that emitted by a low pressure mercury lamp. Fluorescent lamps produce UV radiation by ... coating on the inside of the tubes absorbs the UV and converts it to visible light.

Description : Laser is a device to produce - (1) a beam of white light (2) coherent light (3) microwaves (4) X-rays

Last Answer : (2) coherent light Explanation: In physics, two wave sources are perfectly coherent if they have a constant phase difference and the same frequency, and the same waveform. Coherence is an ideal property of waves that enables stationary (i.e. temporally and spatially constant) interference.

Description : The radiation initially produced in fluorescent tube is (1) infrared (2) ultraviolet (3) microwaves (4) X-rays

Last Answer : ultraviolet

Description : Which one of the following is used for determining the structure of crystal - (1) Gamma rays (2) X-rays (3) UV rays (4) visible light

Last Answer : (2) X-rays Explanation: Crystallography is the science that examines crystals which can be found everywhere in nature, from salt to snowflakes to gemstones.

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.

Description : The ozone layer protects us from - (1) Ultra violet rays (2) Radio waves (3) Visual radiation (4) Infrared radiation

Last Answer : (1) Ultra violet rays Explanation: The ozone layer acts as a filter for the shorter wavelength and highly hazardous ultraviolet radiation (UVR) from the sun, protecting life on Earth from its potentially harmful effects.

Description : The radiant energy having lowest energy is – (1) gamma rays (2) UV rays (3) visible light (4) microwave radiation

Last Answer : (4) microwave radiation Explanation: The parts of the electromagnetic spectrum, arranged from highest energy to lowest, are gamma rays, Xrays, Ultraviolet light, visible light, infrared light, microwaves, and radio waves.

Description : The radiant energy having lowest energy is (1) gamma rays (2) UV rays (3) visible light (4) microwave radiation

Last Answer : microwave radiation 

Description : Any energy which radiates in the form of radio waves, infrared waves, light waves, x-rays, etc. A. Radiant energy B. Electromagnetic C. Heat D. Ultraviolet

Last Answer : B. Electromagnetic

Description : Which of the following has the highest energy? A. gamma rays (Answer) B. X-rays C. Ultra-violet radiation D. radio waves

Last Answer : A. gamma rays (Answer)

Description : By the transition of inner shell electrons in heavy atoms, high energy photons are emitted which are a) gamma rays b) X-rays c) radio waves d) photon rays

Last Answer : b) X-rays

Description : What are the electromagnetic radiations of wavelengths less than 300 angstroms? A. X-rays B. Ultraviolet rays C. Infrared D. Microwaves

Last Answer : A. X-rays

Description : For bactericidal activity,__________ has/have the ability to cause thymine dimer formation. a. X rays b. B ultraviolet light a. Gamma Rays b. Microwaves

Last Answer : b. B ultraviolet light

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Last Answer : Option C

Description : Joining of thin foils is preferred to be done by (A) Gamma rays (B) X-rays (C) Microwaves (D) Gas welding

Last Answer : Option C

Description : Pair production can be studied with a) Ultraviolet rays b) X-rays c) Microwaves d) -rays

Last Answer : d) -rays

Description : A color television set employs a 25,000 volt electron accelerator to produce the picture and potentially harmful radiation which must be shielded against. The main component of this radiation consists ... which penetrate the picture tube x) soft x-rays y) microwaves z) ultraviolet radiation 

Last Answer : ANSWER: X -- SOFT X-RAYS

Description : Thiamidine dimer formation in DNA is caused by - (1) IR-rays (2) X-rays (3) b and g-rays (4) UV-rays

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Description : Ozone saves the biosphere by absorbing high energy radiations called - (1) Infra-red (2) Gamma rays (3) Ultraviolet rays (UV) (4) X-rays

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Description : Which of the following is generally used for induced mutagenesis in crop plants? (a) X-rays (b) UV (260 nm) (c) Gamma rays (from cobalt-60) (d) Alpha particles

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Description : Which of the following is NOT a carcinogen? a. Genetic factors b. UV light c. Certain chemicals d. X rays

Last Answer : a. Genetic factors

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Last Answer : UV-rays

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Last Answer : Ultraviolet rays (UV) 

Description : Is the same for radio waves and gamma rays traveling in space?

Last Answer : Need answer

Description : What Infrared rays are electromagnet waves that are longer than radio waves but shorter than visible light rays true of false?

Last Answer : Need answer

Description : Which of the following does NOT travel in a vacuum? A. Radio waves B. Gamma rays C. Magnetic waves D. Sound waves

Last Answer : D. Sound waves

Description : Laser is a device to produce (A) Gamma rays (B) Microwaves (C) A beam of white light (D) A beam of coherent light

Last Answer : Option B

Description : EPROM contents can be erased by exposing it to (A) Ultraviolet rays. (B) Infrared rays. (C) Burst of microwaves. (D) Intense heat radiations.

Last Answer : (A) Ultraviolet rays. EPROM contents can be erased by exposing it to Ultraviolet rays (The Ultraviolet light passes through a window in the IC package to the EPROM chip where it releases stored charges. Thus the stored contents are erased).

Description : Microwaves are electromagnetic waves with frequency, in the range of which unit? -Do You Know?

Last Answer : Microwaves have frequencies ranging from about 1 billion cycles per second, or 1 gigahertz (GHz), up to about 300 gigahertz and wavelengths of about 30 centimeters (12 inches) to 1 millimeter (0.04 inches),

Description : Microwaves can be focused and reflected in the same way as what other type of waves?

Last Answer : Light waves.

Description : They wrote a paper describing how it was possible to use stimulated emission for amplifying light waves (laser) as well as microwaves (maser). ∙ A. Theodore Maiman ∙ B. KC Kao and GA Bockham ∙ C. Charles Townes and Arthur Schawlow ∙ D. Kapron, Keck and Maurer

Last Answer : C. Charles Townes and Arthur Schawlow

Description : They wrote a paper describing how it was possible to use stimulated emission for amplifying light waves (laser) as well as microwaves (maser).

Last Answer : Charles Townes and Arthur Schawlow