Description : Photons and gravitons are names associated with a category of particles called: w) mesons x) bosons y) leptons z) baryons
Last Answer : ANSWER: X --BOSONS
Description : Nucleons are regarded as composites sub-particles known as – (1) Mesons (2) Quarks (3) Leptons (4) Photons
Last Answer : (2) Quarks
Description : Nucleons are regarded as composites sub-particles known as (1) Mesons (2) Quarks (3) Leptons (4) Photons
Last Answer : Quarks
Description : Neutrinos are a subset of which of the following categories? w) photons x) leptons y) mesons z) baryons
Last Answer : ANSWER: X -- LEPTONS
Description : (A) Any kind of exchange force helps the nucleus to be more destabilised. (R ) `pi`-mesons are exchanged between nucleons incessantly.
Last Answer : (A) Any kind of exchange force helps the nucleus to be more destabilised. (R ) `pi`-mesons are exchanged ... D. If both (A) and (R ) are incorrect.
Description : The nuclear particles that are assumed to hold nucleons together are (a) Electrons (b) Positrons (c) Neutrons (d) Mesons
Last Answer : Ans:(d)
Description : The nuclear particles which are assumed to hold the nucleons together are - (1) positrons (2) neutrons (3) electrons (4) mesons
Last Answer : (4) mesons Explanation: The nuclear particles which are assumed to hold the nucleons together are mesons.
Description : Which one of the following particles travels at the speed of light? w) neutrons x) electrons y) photons z) muons
Last Answer : ANSWER: Y -- PHOTONS
Description : In Rutherford's experiment involving the deflection of alpha particles by atomic nuclei, the fact that some of the alpha particles bombarding the thin gold foil were back-scattered, led to one of the ... its nucleus z) the nucleus of a gold atom occupies nearly the entire space of the atom
Last Answer : ANSWER: Y -- MOST OF THE MASS OF A GOLD ATOM IS IN ITS NUCLEUS
Description : Alpha particles are nuclei of: w) hydrogen x) helium y) oxygen z) nitrogen
Last Answer : ANSWER: X -- HELIUM
Description : What is viewed through an electron microscope? (1) Electrons and other elementary particles (2) Structure of bacteria and viruses (3) Inside of human stomach (4) Inside of the human eye
Last Answer : (2) Structure of bacteria and viruses Explanation: Electron microscopes are used to observe a wide range of biological and inorganic specimens including microorganisms, cells, large molecules, ... microscope because electrons have wavelengths about 100,000 times shorter than visible light photons.
Last Answer : Structure of bacteria and viruses
Description : Mesons are found in which rays?
Last Answer : – Cosmic rays
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 : Where are mesons found ? (1) Cosmic rays (2) X-rays (3) Gamma rays (4) Laser beam
Last Answer : Cosmic rays
Description : Atomic number of an element gives (a) The number of protons in its atom (b) The number of nucleons in its atom (c) The weight of the atom of the element (d) The total number of elementary particles in its atom
Last Answer : Ans:(a)
Description : Taking the values of atomic masses from the tables, find the maximum kinetic energy of beta-particles emitted by `Be^(10)` nuclei formed directly in t
Last Answer : Taking the values of atomic masses from the tables, find the maximum kinetic energy of beta- ... )` nuclei formed directly in the ground state.
Description : The energy associated with one photon of a light beam is proportional to one of the following. Is it proportional to: w) the intensity of the light source from which it came x) the number of photons in the beam y) the frequency of the photon z) the speed of the photon
Last Answer : ANSWER: Y -- THE FREQUENCY OF THE PHOTON
Description : Mesons are found in which rays? -Do You Know?
Last Answer : answer:
Description : How do anti-photons behave?
Last Answer : The photon is its own antiparticle. So an anti photon interacts with electrons in the exact same way as the photon. In fact, if you created an anti hydrogen atom, so there was a positron in place of the ... in the atom. The argument is the same for the anti photon since it is the same as a photon.
Description : As light from a star spreads out and weakens, do gaps form between the photons? -Physics
Last Answer : The answer depends on how you look at light. However, in the most accurate approach, gaps do not form between photons as light spreads out. Light is made up of tiny fundamental bits called photons. ... from a distant star has a very weak wave magnitude, which leads to large gaps in photon reception.
Description : Which of the following supports particle nature of photons? (1) Diffraction (2) Polarization (3) Photoelectric effect (4) Interference
Last Answer : (3) Photoelectric effect
Description : Photoelectric electricity is produced directly from solar energy when which of the following are absorbed in a semiconductor to create an electric current? w) protons x) electrons y) neutrons z) photons
Last Answer : ANSWER: Z -- PHOTONS
Description : The index of refraction can be considered: w) a ratio of material thickness between substances x) a ratio of velocities of light in different materials y) a ratio of mass between materials z) to have the units of photons
Last Answer : ANSWER: X -- A RATIO OF VELOCITIES OF LIGHT OF DIFFERENT MATERIALS
Description : Who first explained the billiard-ball-like collisions photons make with the free electrons in a scattering material? He received the Nobel Prize in Physics in 1927 for this work.
Last Answer : ANSWER: ARTHUR HOLLY COMPTON
Description : The photomultiplier tube in the scintillation counter multiplies one of the following. Does it multiply: w) scintillations x) electrons y) ions z) photons
Last Answer : ANSWER: X -- ELECTRONS
Description : The ENERGY associated with a photon depends upon the photon's: w) velocity x) frequency y) amplitude z) the brightness of the source from which it comes
Last Answer : ANSWER: X -- FREQUENCY
Description : Which of the following supports particle nature of photons ? (1) Diffraction (2) Polarization (3) Photoelectric effect (4) Interference
Last Answer : Photoelectric effect
Description : ____________, which is included in the project cost, is estimated on the basis of the year when the enterprise breaks even. A. working capital B. cost of capital C. cost of production D. cost of equity
Last Answer : A. working capital
Description : Ribosomes similar to those of bacteria found in (A) Plant nuclei (B) Cardiac muscle cytoplasm (C) Liver endoplasmic reticulum (D) Neuronal cytoplasm
Last Answer : Answer : A
Description : Nuclear radiation is emitted by those elements whose: A. molecules are stable B. molecules are unstable C. nuclei are stable D. nuclei are unstable (Answer)
Last Answer : D. nuclei are unstable (Answer)
Description : Do elementary schools still have those little pictures of all the presidents in classrooms?
Last Answer : I went to elementary school in the 60's and 70's in California, and not only did we not have all the different pictures of Presidents, we didn't even have any picture the President who was in office ... never has. I always thought that was something you just saw on TV, like on Leave It To Beaver.
Description : Magnitude of charge is known as A. charge count B. elementary charge C. elementary count D. charge number
Last Answer : elementary charge
Description : Photons are incident from vacuum on a transparent material with a refractive index n for a given wavelength. Determine the momentum of the incident ph
Last Answer : Photons are incident from vacuum on a transparent material with a refractive index n for a given wavelength. ... (nlambda)` D. `h//lambda(n+1)`
Description : Why is there a tedency for electrons to settle around a nuclei in up to eight layers?
Last Answer : Quantized energy levels result from the relation between a particle's energy and its wavelength. For a confined particle such as an electron in an atom, the wave function has the form of ... next possible orbit has a distance twice the electron's wavelength. There can be nothing in between.
Description : Which force binds the nuclei ?
Last Answer : A strong nuclear force binds the nuclei.
Description : A nuclear reaction in which small nuclei combine to produce a larger nucleus is known as:
Last Answer : ANSWER: FUSION or NUCLEAR FUSION
Description : Dr. Leon Lederman and two other physicists won the Nobel prize for discovering an elementary particle. That particle is the: w) positron x) meson y) muon z) neutrino
Last Answer : ANSWER: Z -- NEUTRINO
Description : The compound in which the number of `d pi - p pi` bonds are equal to those present in `ClO_(4)` -
Last Answer : The compound in which the number of `d pi - p pi` bonds are equal to those present in `ClO_(4)` - A. `XeF_(4)` B. `XeO_(3)` C. `XeO_(4)` D. `XeF_(6)`
Description : Which activity is not included in production? (1) Production of wheat by a farmer (2) Production of medicines by a company (3) Services given by a nurse in hospital (4) Services done by a house-wife in her own house
Last Answer : (4) Services done by a house-wife in her own house Explanation: Services done by a house-wife in her own house are not included in production.
Description : Which activity is not included in production ? (1) Production of wheat by a farmer (2) Production of medicines by a company (3) Services given by a nurse in hospital (4) Services done by a house-wife in her own house
Last Answer : Services done by a house-wife in her own house
Description : When viewed under a microscope a sample of tissue reveals striations and long thin fibers that contain many nuclei and mitochondria. What type of tissue is most likely being viewed?
Last Answer : Need answer
Description : Pick out the correct statement. (A) Like internal energy and enthalpy, the absolute value of standard entropy for elementary substances is zero (B) Melting of ice involves increase in enthalpy and ... of an ideal gas depends only on its pressure (D) Maximum work is done under reversible conditions
Last Answer : (D) Maximum work is done under reversible conditions
Description : .A functional manager is responsible for a. one of the five market segments. b. R&D, Marketing, Production, Finance, Human Resources, and TQM/PI. c. one of the five products in the starting product line. d. none of these. e. monitoring competitors in their entirety.
Last Answer : b. R&D, Marketing, Production, Finance, Human Resources, and TQM/PI.
Description : The number of photons emitted in 10 hours by a 60 W sodium lamp `(lambda` of photon `= 6000 Å)`
Last Answer : The number of photons emitted in 10 hours by a 60 W sodium lamp `(lambda` of photon `= 6000 Å)` A. `6. ... C. `8.40xx10^(23)` D. `3.40xx10^(23)`
Description : Find the quantum number `n` corresponding to the excited state of `He^(+)` ion, if on transition to the ground state that ion emits two photons in suc
Last Answer : Find the quantum number `n` corresponding to the excited state of `He^(+)` ion, if on transition to the ... with wave lengths `108.5` and `30.4 nm`.
Description : The difference between isotopes of an element is due to the presence of a different number of (a) Protons (b) Neutrons (c) Electrons (d) Photons
Last Answer : Ans:(b)
Description : In the annihilation of matter the number of photons produced is a) One b) Two c) Three d) None
Last Answer : b) Two
Description : With increase in K2 /K1 in case of a unimolecular type elementary reactions as shown in the bellow figure, the fractional yield of 'R' in mixed reactor (for a given conversion of 'A'). (A) Decreases (B) Increases (C) Increases linearly (D) Remain same
Last Answer : (A) Decreases