What are the characteristics of beta rays ?

What are the characteristics of beta rays ?
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Beta ray features: 1. Beta ray is the flow of negative electrons. 2. The speed of the beta ray is 50% of the speed of light. 3. Sometimes it is up to 98%. 5. The harmful effects of beta particles are not considered as alpha particles.
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Give the characteristics of Alpha , Beta & Gamma rays.

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.

Beta rays emitted by a radioactive material are – (1) The electrons orbiting around the nucleus (2) Charged particles emitted by nucleus (3) Neutral particles (4) Electromagnetic radiations

Description : Beta rays emitted by a radioactive material are – (1) The electrons orbiting around the nucleus (2) Charged particles emitted by nucleus (3) Neutral particles (4) Electromagnetic radiations

Last Answer : (2) Charged particles emitted by nucleus Explanation: A beta ray is a high-energy, highspeed electron (negatively charged) or positron (positively charged) emitted in the radioactive decay of an atomic nucleus, such as a potassium40 nucleus, in the process of beta decay.

Forged documents are detected by – (1) ultraviolet rays (2) infra-red rays (3) beta rays (4) gamma rays

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.

In radioactive decay, the emission of an electron is characteristic of: w) Alpha decay x) Beta decay y) Gamma decay z) X-rays

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

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Description : Forged documents are detected by (1) ultraviolet rays (2) infra-red rays (3) beta rays (4) gamma rays

Last Answer : ultraviolet rays

`beta` rays are emitted from the _________.

Description : `beta` rays are emitted from the _________.

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Assertion (A) : `beta`-particles have greater penetrating power than `alpha`-rays but less than `gamma`-rays Reason (R ) : `beta`-particles are lighte

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Which of the following "is"//"are" correct? a)`alpha`-rays are more penetrating then `beta`-rays. b)`alpha`-rays have greater ionizing power than `bet

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The correct order of ionising capcity of `alpha, beta` and `gamma`-rays is

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`

Which of the following type of radiation does not originate within the nucleus ? (a) Alpha (b) Beta (c) Gamma (d) X - rays

Description : Which of the following type of radiation does not originate within the nucleus ? (a) Alpha (b) Beta (c) Gamma (d) X - rays

Last Answer : Ans:(d)

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 charged particles. The correct statements are: (a) 1, 2 and 4 only (b) 1, 3 and 4 only (c) 1, 2, 3 and 4 (d) 1, 2 and 3 only

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)

The maximum biological damage is produced by – (1) X rays (2) gamma - rays (3) beta - rays (4) alpha - rays

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.

Alpha rays are different from beta rays in one of the following ways. Are they different since: w) alpha rays are deflected in a magnetic field and beta rays are not x) alpha rays are identical to the electron in mass, and beta rays are not y) alpha rays have a positive charge and beta rays have a negative charge z) alpha rays are produced within the nucleus and beta rays are produced outside the nucleus

Description : Alpha rays are different from beta rays in one of the following ways. Are they different since: w) alpha rays are deflected in a magnetic field and beta rays are not x) alpha rays are ... negative charge z) alpha rays are produced within the nucleus and beta rays are produced outside the nucleus 

Last Answer : ANSWER: Y -- ALPHA RAYS HAVE A POSITIVE CHARGE AND BETA RAYS HAVE A NEGATIVE CHARGE

What form of radiation most closely resembles X-rays? w) alpha x) beta y) gamma z) neutron

Description : What form of radiation most closely resembles X-rays? w) alpha x) beta y) gamma z) neutron

Last Answer : ANSWER: Y -- GAMMA 

The maximum biological damage is produced by (1) X – rays (2) gamma – rays (3) beta – rays (4) alpha – rays

Description : The maximum biological damage is produced by (1) X – rays (2) gamma – rays (3) beta – rays (4) alpha – rays

Last Answer : gamma – rays

What are the characteristics of alpha rays ?

Description : What are the characteristics of alpha rays ?

Last Answer : Alpha ray features: 1. Alpha ray particles are deadly harmful and dangerous. 2. The speed of alpha rays is 10 percent of the speed of light. 3. An alpha particle is a helium nucleus.

What are the characteristics of gamma rays ?

Description : What are the characteristics of gamma rays ?

Last Answer : The properties of gamma ray are as follows- 1, it is a neutral particle. 2, it has no mass. 3, its velocity is equal to the velocity of light. 4, It is not distracted by electric and magnetic fields. 5, It is possible to ionize the light.

What is beta ray ?

Description : What is beta ray ?

Last Answer : Beta rays or beta particles are actually electrons. It is surely a wonder that inside the nucleus there are only protons and neutrons but how do electrons come out of it ? For that to happen, a neutron inside the nucleus has to be converted into a proton.

What is the mass of beta ray ?

Description : What is the mass of beta ray ?

Last Answer : Beta ray mass 9.11 x 10-31kg

What is the mass of beta particles ?

Description : What is the mass of beta particles ?

Last Answer : Beta particle mass is: 0.11X10 (_31) Kg

A radioactive substance does not undergo any change (in mass or charge) during – (1) ganuna-emission (2) oxidation (3) alpha-emission (4) beta-emission

Description : A radioactive substance does not undergo any change (in mass or charge) during – (1) ganuna-emission (2) oxidation (3) alpha-emission (4) beta-emission

Last Answer : (1) ganuna-emission Explanation: Gamma-rays do not carry any charge. These rays do not have any mass and hence can not be considered to be made up of particles.

A proton is identical to _____. (1) the nucleus of helium (2) the nucleus of a hydrogen atom (3) an alpha-particle (4) a beta particle

Description : A proton is identical to _____. (1) the nucleus of helium (2) the nucleus of a hydrogen atom (3) an alpha-particle (4) a beta particle

Last Answer : D. a beta particle

A radioactive substance emits? (1) alpha particle (2) beta particle (3) gamma particle (4) all of the three

Description : A radioactive substance emits? (1) alpha particle (2) beta particle (3) gamma particle (4) all of the three

Last Answer : (4) all of the three Explanation: Radioactive substances are continually producing three kinds of dangerous radiation: alpha particles, beta particles and gamma rays. These types of radiation are invisible to the naked eye, and so you won't see a green glow.

Which of the following three nuclear radiations is the most penetrating? w) alpha x) beta y) gamma

Description : Which of the following three nuclear radiations is the most penetrating? w) alpha x) beta y) gamma

Last Answer : ANSWER: Y -- GAMMA

For which of the following reasons is plutonium-238 used for generating electricity on spacecraft? w) It is an alpha emitter with long half-life. x) It is a beta emitter with high specific power. y) It occurs abundantly in nature. z) It has low specific power.

Description : For which of the following reasons is plutonium-238 used for generating electricity on spacecraft? w) It is an alpha emitter with long half-life. x) It is a beta emitter with high specific power. y) It occurs abundantly in nature. z) It has low specific power.

Last Answer : ANSWER: W -- IT IS AN ALPHA EMITTER WITH LONG HALF-LIFE. 

If 64Cu emits a beta particle, what would the product be? w) 63Cu x) 64Cu+1 y) 64Cu-1 z) 64Zn

Description : If 64Cu emits a beta particle, what would the product be? w) 63Cu x) 64Cu+1 y) 64Cu-1 z) 64Zn

Last Answer : ANSWER: Z -- 64Zn

When an atom undergoes beta decay, the atomic number of the nucleus: w) is unchanged x) increases by one y) decreases by one z) none of the above

Description : When an atom undergoes beta decay, the atomic number of the nucleus: w) is unchanged x) increases by one y) decreases by one z) none of the above

Last Answer : ANSWER: X -- INCREASES BY ONE

When an atomic nucleus emits a beta particle, one of its neutrons disintegrates into one of the following set of particles. Does it disintegrate into: w) a positron and an electron x) a proton, an electron, and an antineutrino y) a proton, an electron, and a positron z) a neutrino and an antineutrino

Description : When an atomic nucleus emits a beta particle, one of its neutrons disintegrates into one of the following set of particles. Does it disintegrate into: w) a positron and an electron x) a proton, an ... and an antineutrino y) a proton, an electron, and a positron z) a neutrino and an antineutrino

Last Answer : ANSWER: X -- A PROTON, AN ELECTRON AND AN ANTINEUTRINO 

A radioactive substance does not undergo any change (in mass or charge) during (1) gamma-emission (2) oxidation (3) alpha-emission (4) beta-emission

Description : A radioactive substance does not undergo any change (in mass or charge) during (1) gamma-emission (2) oxidation (3) alpha-emission (4) beta-emission

Last Answer : gamma-emission

What is the use of infrared rays ?

Description : What is the use of infrared rays ?

Last Answer : Use of infrared rays 1. To cure muscle pain ; 2. To take pictures in the dark ; 3. To give weather forecasts ; 4. Treatment of skin and arthritis and 5. In the industry.

What are the religions of X-rays ?

Description : What are the religions of X-rays ?

Last Answer : The properties of X-rays are highlighted below: This ray travels in a straight line. X-ray electromagnetic waves. It is not distracted by electric field or magnetic field. Its wavelength is very short , around 10 -10m . It is charge neutral.

Why Ultraviolet Rays Are Harmful To The Body ?

Description : Why Ultraviolet Rays Are Harmful To The Body ?

Last Answer : : The wavelength of ultraviolet ray is less than the wavelength of visible light. We know that light is the flow of photon particles and its energy equation is , E = hf = hc / λ where , E = ... have a hand behind them. UV rays also play a role in causing skin wrinkles at a relatively young age.

In what year did scientist Rজntgen win the Nobel Prize for his discovery of X-rays ?

Last Answer : Scientist Will Helm Rন্টntgen was awarded the Nobel Prize in Physics in 1901 for his discovery of X-rays.

Where can parallel light rays meet ?

Last Answer : : Inside a spherical object.

Which rays are most penetrating?

Description : Which rays are most penetrating?

Last Answer : – y-rays

Which pairs of rays is electromagnetic in nature?

Description : Which pairs of rays is electromagnetic in nature?

Last Answer : – x-rays and gamma rays

The wavelength of X-rays is of the order of howmany angstrom?

Description : The wavelength of X-rays is of the order of howmany angstrom?

Last Answer : – 1 Angstrom

Mesons are found in which rays?

Description : Mesons are found in which rays?

Last Answer : – Cosmic rays

Woollen cloth protects the body from cold because – (1) it is a good conductor of heat (2) it is a poor conductor of heat (3) external heat rays enter into the body through the woollen cloth (4) it reflects heat

Description : Woollen cloth protects the body from cold because – (1) it is a good conductor of heat (2) it is a poor conductor of heat (3) external heat rays enter into the body through the woollen cloth (4) it reflects heat

Last Answer : (2) it is a poor conductor of heat Explanation: It is just because woolen clothes have fibres and between those fibres air is trapped which reduces heat loss. It reduces heat loss because it is an insulator or poor conductor of heat.

It is dangerous to observe solar eclipse with naked eyes because – (1) Infrared radiations from sun burn our retina (2) Ultraviolet radiations from Sun burn our retina (3) All radiations from sun initiate chemical reactions in eyes (4) Cosmic rays reach eyes more during the eclipse

Description : It is dangerous to observe solar eclipse with naked eyes because – (1) Infrared radiations from sun burn our retina (2) Ultraviolet radiations from Sun burn our retina (3) All radiations from sun initiate chemical reactions in eyes (4) Cosmic rays reach eyes more during the eclipse

Last Answer : (2) Ultraviolet radiations from Sun burn our retina Explanation: The solar radiation that reaches the surface of Earth ranges from ultraviolet (UV) radiation at wavelengths longer than 290 nm to radio ... of the Sun during an eclipse is for the development of "eclipse blindness" or retinal burns.

Indicate the correct arrangement for electromagnetic radiation in order of their increasing wavelength. (1) Microwave, infrared, visible. X-rays (2) X-rays, visible, infrared, microwave (3) Visible, infrared, microwave, X-rays (4) X-rays, infrared, visible, microwave

Description : Indicate the correct arrangement for electromagnetic radiation in order of their increasing wavelength. (1) Microwave, infrared, visible. X-rays (2) X-rays, visible, infrared, microwave (3) Visible, infrared, microwave, X-rays (4) X-rays, infrared, visible, microwave

Last Answer : (4) X-rays, infrared, visible, microwave Explanation: The Electromagnetic spectrum in order of decreasing energy, thus increasing wavelength : Gamma Rays-wavelength: 0.01 nm ; X-rays -1 nm ; Ultra-violet Rays-0.1 ... -10 m ; and Very High Frequency (VHF) and Ultra High Frequency (UHF): 10 m-10 cm.

Winch of the following is not true about X-rays? (1) have low penetrating power (2) travel with the speed of light (3) Can be reflected or refracted (4) can affect photographic plates

Description : Winch of the following is not true about X-rays? (1) have low penetrating power (2) travel with the speed of light (3) Can be reflected or refracted (4) can affect photographic plates

Last Answer : (1) have low penetrating power Explanation: X-rays and gamma rays are photons, i.e. high-energy light-waves. When emitted by a source, for example, radium or cobalt, located outside the body, they ... they can be used in diagnostic medicine to image human bones or human organs made opaque by a dye.

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.

Before X-ray examination (coloured Xray) of the stomach, patients are given suitable salt of barium because. (1) barium is a good absorber of X-rays and helps stomach to appear clearly (2) barium salts are white in colour and this helps stomach to appear clearly (3) barium allows X-rays to pass through the stomach (4) barium salts are easily available

Description : Before X-ray examination (coloured Xray) of the stomach, patients are given suitable salt of barium because. (1) barium is a good absorber of X-rays and helps stomach to appear clearly (2) barium ... clearly (3) barium allows X-rays to pass through the stomach (4) barium salts are easily available

Last Answer : (1) barium is a good absorber of X-rays and helps stomach to appear clearly

The device used for measuring the wavelength of X-rays is – (1) G.M. Counter (2) Cyclotron (3) Bragg Spectrometer (4) Mass Spectrometer

Description : The device used for measuring the wavelength of X-rays is – (1) G.M. Counter (2) Cyclotron (3) Bragg Spectrometer (4) Mass Spectrometer

Last Answer : (3) Bragg Spectrometer Explanation: Bragg Spectrometer is an instrument used to analyze crystal structure by using X-rays. In it, a beam of collimated X-rays strikes the crystal, and a detector measures the angles and intensities of the reflected beam.

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.

Which, of the following radiations has the least wavelength? (1) X-rays (2) a-rays (3) g-rays (4) b-rays

Description : Which, of the following radiations has the least wavelength? (1) X-rays (2) a-rays (3) g-rays (4) b-rays

Last Answer : (3) g-rays Explanation: X-rays - smaller than 10 nano metre gamma- rays - 0.0005 to 0.1 nano metre alpha-rays - 125 nano metre

Which of the following has the lowest frequency? (1) Visible light (2) Gamma rays (3) Xrays (4) Ultra violet rays

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.