Description : Give the characteristics of Alpha , Beta & Gamma rays.
Last Answer : Characteristics of Alpha Rays : (1) Composition : They are comprised of positively charged particles. (2) Speed : Their speed is about 1/10 th of the speed of light. (3) Penetration : They cannot pass ... in any electric field. Hence they carry no charge. (5) Ionization : They can ionize air or gas.
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 : Which of the following has the lowest frequency? (1) Visible light (2) Gamma rays (3) Xrays (4) Ultra violet rays
Last Answer : (1) Visible light Explanation: The common material used as fuse wire is an alloy of tin and lead (63% tin and 37% lead). Fuse wires provide over current protection of an electrical circuit ... or strip that melts when too much current flows through it, thereby interrupting the flow of current.
Description : Curie is an unit of – (1) Radioactivity (2) energy of Gamma rays (3) intensity of Gamma rays (4) work function
Last Answer : (1) Radioactivity Explanation: The curie (symbol Ci) is a non-SI unit of radioactivity, named 'in honour of Pierre Curie. It was originally defined as "the quantity or mass of radium emanation in equilibrium with one gram of radium (element)".
Description : Ozone layer above the surface of Earth provides a shield against – (1) X-rays (2) Ultra-violet rays (3) Gamma rays (4) Infra-red rays
Last Answer : (2) Ultra-violet rays Explanation: The Ozone layer absorbs 97-99% of the Sun's medium-frequency ultraviolet light (from about 200 nm to 315 nm wavelength), which potentially damages exposed life forms on Earth.
Description : Where are mesons found? (1) Cosmic rays (2) X-rays (3) Gamma rays (4) Laser beam
Last Answer : (1) Cosmic rays Explanation: Mesons are not produced by radioactive decay, but appear in nature only as short-lived products of very high-energy interactions in matter, between particles made ... subatomic particles composed of one quark and one anti-quark, bound together by the strong interaction.
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 : 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 : Forged documents are detected by – (1) ultraviolet rays (2) infra-red rays (3) beta rays (4) gamma rays
Last Answer : (1) ultraviolet rays Explanation: Old postcards, books, signs, photos and other paper products made before the late 1930s rarely glow under a black light. Chemical bleaches and dyes used ... light. Knowing this helps to detect forged documents and distinguish reproductions in all types of ephemera.
Description : Energy of Ultraviolet rays is great than (1) Infra-red rays (2) Gamma rays (3) X-rays (4) Cosmic rays
Last Answer : (1) Infra-red rays Explanation: The electromagnetic spectrum is the name we use when we talk about different types of radiation as a group. The parts of the electromagnetic spectmm, arranged from highest energy ... mass that move in a wave pattern, all at the same speed - the speed of light.
Description : Gamma rays can cause – (1) gene mutation (2) sneezing (3) burning (4) fever
Last Answer : (1) gene mutation Explanation: In molecular biology and genetics, mutations are accidental changes in a genomic sequence of DNA: the DNA sequence of a cell's genome or the DNA or RNA ... viruses, transposons and mutagenic chemicals, as well as errors that, occur during meiosis or DNA replication.
Description : Gamma rays have greatest similarity with – (1) α-rays (2) β-rays (3) X-rays (4) U.V.-rays
Last Answer : (3) X-rays Explanation: Gamma radiation, also known as gamma rays or hyphenated as gamma-rays and denoted as y, is electromagnetic radiation of high frequency and therefore high energy. Gamma rays ... from high energy states of atomic nuclei (gamma decay), but are also created by other processes.
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 : 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 : In radioactive decay, the emission of an electron is characteristic of: w) Alpha decay x) Beta decay y) Gamma decay z) X-rays
Last Answer : ANSWER: X -- BETA DECAY
Last Answer : Visible light
Description : Curie is an unit of (1) Radioactivity (2) energy of Gamma rays (3) intensity of Gamma rays (4) work function
Last Answer : Radioactivity
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 : Ozone layer above the surface of Earth provides a shield against (1) X-rays (2) Ultra-violet rays (3) Gamma rays (4) Infra-red rays
Last Answer : Ultra-violet rays
Description : Forged documents are detected by (1) ultraviolet rays (2) infra-red rays (3) beta rays (4) gamma rays
Last Answer : ultraviolet rays
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 : Gamma rays have greatest similarity with (1) a-rays (2) b-rays (3) X-rays (4) U.V.-rays
Last Answer : X-rays
Description : Energy of Ultraviolet rays is great than (1) Infra–red rays (2) Gamma rays (3) X–rays (4) Cosmic rays
Last Answer : Infra–red rays
Description : Where are mesons found ? (1) Cosmic rays (2) X-rays (3) Gamma rays (4) Laser beam
Last Answer : Cosmic rays
Description : Gamma rays can cause (1) gene mutation (2) sneezing (3) burning (4) fever
Last Answer : gene mutation
Description : Which is natural source of gamma-rays? -Do You Know?
Last Answer : answer:
Description : Energy transferred to a person through gamma rays is measured in by which unit? -Do You Know?
Description : Which word best describes gamma rays?
Last Answer : Destructive
Description : Which of X-rays and gamma rays has higher penetrating power ?
Last Answer : The penetrating power of gamma rays is about 100 times greater than that of X-rays.
Description : Assertion. Snakes exposed to gamma rays become non- poisonous. Reason. Poisonous snakes have poison glands and a pair of fangs. They are affected by g
Last Answer : Assertion. Snakes exposed to gamma rays become non- poisonous. Reason. Poisonous snakes have poison ... . If both Assertion and Reason are false.
Description : Assertion (A) : `beta`-particles have greater penetrating power than `alpha`-rays but less than `gamma`-rays Reason (R ) : `beta`-particles are lighte
Last Answer : Assertion (A) : `beta`-particles have greater penetrating power than `alpha`-rays but less than `gamma`-rays ... . If both (A) and (R ) are incorrect.
Description : Gamma rays are:
Last Answer : Gamma rays are: A. high energy electrons B. low energy electrons C. high energy electromagnetic waves D. high energy positrons
Description : The correct order of ionising capcity of `alpha, beta` and `gamma`-rays is
Last Answer : The correct order of ionising capcity of `alpha, beta` and `gamma`-rays is A. `alpha gt beta gt gamma` ... alpha gt beta` D. `beta gt gamma gt alpha`
Description : Is the same for radio waves and gamma rays traveling in space?
Last Answer : Need answer
Description : Are gamma rays positrons?
Last Answer : No, they are not.Gamma rays are photons - just like light. Theyare electrically neutral. They move at the speed of light.Positrons, also known as anti-electrons, have a positive charge.They move at speeds less than the speed of light.
Description : Who have the highest energy gamma rays or neutrons produced from nuclear reactor?
Last Answer : Not sure
Description : Gamma rays have greatest similarity with
Description : The nature of light waves is similar to (a) Cosmic rays (b) Cathode rays (c) Alpha rays (d) Gamma rays
Last Answer : Ans:(d)
Description : Which of the following type of radiation does not originate within the nucleus ? (a) Alpha (b) Beta (c) Gamma (d) X - rays
Description : Consider the following statements: 1. The nuclear forces are short range forces. 2. Alpha rays emitted by a radionuclide are helium nucleus. 3. Gamma rays are electromagnetic waves. 4. Beta rays emitted by a radionuclide are negatively ... 1, 3 and 4 only (c) 1, 2, 3 and 4 (d) 1, 2 and 3 only
Last Answer : Ans:(c)
Description : Ozone protects biosphere from – (1) X-rays (2) Gamma rays (3) Ultraviolet rays (4) Infrared rays
Last Answer : (3) Ultraviolet rays Explanation: Ozone is an allotrope of oxygen that is formed from dioxygen by the action of ultraviolet light and also atmospheric electrical discharges. The ozone layer in ... radiation (UVR) from the sun, protecting life on Earth from its potentially harmful effects.
Description : The maximum biological damage is produced by – (1) X rays (2) gamma - rays (3) beta - rays (4) alpha - rays
Last Answer : (2) gamma - rays Explanation: Gamma radiation, also known as gamma rays, is electromagnetic radiation of high frequency and therefore high energy. Gamma rays are ionizing radiation and are thus biologically hazardous.
Description : Growth of the baby in the uterus is found using - (1) X-rays (2) Gamma rays (3) Ultra sound (4) Ultraviolet rays
Last Answer : (3) Ultra sound Explanation: Ultrasound is a technique that uses sound waves to show a picture of a baby (fetus) in the uterus. It works by bouncing sound waves off the developing fetus. Echoes ... moving or still picture, called 43$ a sonogram, on a screen. The technique is also called sonography.
Description : Ozone saves the biosphere by absorbing high energy radiations called - (1) Infra-red (2) Gamma rays (3) Ultraviolet rays (UV) (4) X-rays
Last Answer : (3) Ultraviolet rays (UV) Explanation: The ozone layer or ozone shield is a region of Earth's stratosphere that absorbs most of the Sun's ultraviolet (UV) radiation. It absorbs 97 to 99 ... 200 nm to 315 nm wavelength), which otherwise would potentially damage exposed life forms near the surface.
Description : Gamma rays are - (1) High energy electrons (2) Low energy electrons (3) High energy electromagnetic (4) High energy positron waves
Last Answer : (3) High energy electromagnetic Explanation: Gamma rays (γ) refer to electromagnetic radiation of an extremely high frequency and therefore consist of high energy photons.
Description : Energy transferred to a person through gamma rays is measured in by which unit?
Last Answer : Roentgens
Description : Which is natural source of gamma-rays?
Last Answer : Radon gas
Description : Nuclear reactors are provided with shield to guard against the emission of mainly __________ rays. (A) X (B) α and β (C) Neutrons & gamma (D) Infrared
Last Answer : (C) Neutrons & gamma
Description : Pick out the wrong statement. (A) The ratio of the density of the 'nucleus' to that of the 'atom' is 10 12 (B) α-particle is identical with a doubly charged helium ion (C) The mass of deuterium atom is half that of helium atom (D) Gamma rays are high energy electrons
Last Answer : (D) Gamma rays are high energy electrons
Description : X-rays and Gamma rays
Last Answer : X-Rays - High energy electromagnetic radiation of wavelengths in the range 10 to 0.1 nanometres. X-rays are extra-nuclear and have two sources: (1). A characteristic (e.g.K- or L-) Xray photon is ... originate in the nucleus of atoms. A gamma ray is a photon, i.e. a discrete packet of many waves