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 : Which of the following phrases completes the following statement: The strength of the electric field between two oppositely charged parallel plates is: w) a maximum midway between the plates x) a maximum ... plate y) constant between the plates except near the edges z) zero midway between the plates
Last Answer : ANSWER: Y -- CONSTANT BETWEEN THE PLATES EXCEPT NEAR THE EDGES
Description : A zinc plate is attached to the knob of a negatively charged electroscope. What will happen to the leaves of the electroscope when ultraviolet light is shown on the zinc plate. Will the leaves: w) collapse at once x) gradually come together y) gradually spread further apart z) remain unaffected
Last Answer : ANSWER: X -- GRADUALLY COME TOGETHER
Description : A high voltage applied to a gas discharge tube containing neon gas at very low pressure causes a current to flow through the tube. Which one of the following are the particles that flow towards the ... Are they w) electrons x) protons y) negatively charged neon ions z) positively charged neon ions
Last Answer : ANSWER: Z -- POSITIVELY CHARGED NEON IONS
Description : The physicist Chadwick is known for his association with: w) the alpha particle x) the neutron y) the cloud chamber z) the electron
Last Answer : ANSWER: X -- THE NEUTRON
Description : Compounds of iodine are NOT used for which of the following? w) as a refrigerant x) in photographic film y) as an essential part of diet z) as an antiseptic
Last Answer : ANSWER: W -- AS A REFRIGERANT
Description : In the mass spectrograph, two positively charged ions having the same velocity pass through a slit and enter a uniform magnetic field at right angles to their initial velocities. The ions will NOT be ... charges and their masses are equal z) the ratios of their charges to their masses are equal
Last Answer : ANSWER: Z -- THE RATIOS OF THEIR CHARGES TO THEIR MASSES ARE EQUAL
Description : Which of the following instruments should never have their test leads connected directly to a wall outlet: w) ammeter x) voltmeter y) oscilloscope z) frequency counter
Last Answer : ANSWER: W -- AMMETER
Description : A capacitor and a coil are connected in series. The capacitor is charged and allowed to discharge through the coil. The current that will then flow through the capacitor-coil combination will do ... but diminish steadily to zero z) oscillate at high frequency at first but then at slower frequency
Last Answer : ANSWER: Y -- OSCILLATE BUT DIMINISH STEADILY TO ZERO
Description : Dirac theoretically predicted the existence of the positron. Who experimentally identified positrons in 1932 in cloud chamber pictures of cosmic ray particle tracks?
Last Answer : ANSWER: (C. D.) ANDERSON
Description : A cyclone is an engineering device that is used to w) transport materials x) segregate particles y) control switching devices z) model fractals
Last Answer : ANSWER: X -- SEGREGATE PARTICLES
Description : Two vibrating particles that are "out of phase" differ in the phase of their vibration by: w) 1/4 cycle x) 1/2 cycle y) 3/4 cycle z) 1 cycle
Last Answer : ANSWER: X -- 1/2 CYCLE
Description : A metal ball on an insulated stand is touched by a positively charged glass rod. What happens to the metal ball? Does it w) gain protons and lose electrons x) gain protons y) gain more protons than electrons z) lose electrons
Last Answer : ANSWER: Z -- LOSE ELECTRONS
Description : In a charged hollow metal conductor, the charge is w) on the inside surface only x) on both the inside and outside surfaces y) on the outside surface only z) only between the inside and outside surfaces
Last Answer : ANSWER: Y -- ON THE OUTSIDE SURFACE ONLY
Description : The force on a charged particle moving parallel to magnetic field lines is: w) in the direction of the field x) zero y) perpendicular to the field z) in the opposite direction of the field
Last Answer : ANSWER: X -- ZERO
Description : When a fast charged particle traverses a dielectric medium at a velocity exceeding the velocity of light in that medium, radiation is emitted. This radiation is known as: w) point radiation x) Cerenkov radiation y) Synchrotron radiation z) Bremsstrahlung
Last Answer : ANSWER: X -- CERENKOV RADIATION
Description : What law describes the force between two stationary electrically charged objects? w) Ampere's law x) Coulomb's law y) Kirchoff's Rules (pron: kir-koff rules) z) Ohm's law
Last Answer : ANSWER: X -- COULOMB'S LAW
Description : An electroscope charged WITHOUT contacting a charged body is charged by: w) induction x) conduction y) convection z) insulation
Last Answer : ANSWER: W -- INDUCTION
Description : The length of both sides of a square parallel plate capacitor are doubled. The capacitance is: w) halved x) the same y) doubled z) quadrupled
Last Answer : ANSWER: Z -- QUADRUPLED
Description : When white light passes through a red plate of glass and then through a green plate of glass which one of the following things occur? w) the light is totally absorbed x) the light that emerges is ... ) the light that emerges lacks only its red and green components z) the light that emerges is green
Last Answer : ANSWER: W -- THE LIGHT IS TOTALLY ABSORBED
Description : When a beam of ordinary white light is passed through a Polaroid plate filter, the intensity of the beam that emerges is: w) equal to that of the incident beam x) about 0.9 that of the incident beam y) about one-half that of the incident beam z) practically zero
Last Answer : ANSWER: Y -- ABOUT ONE-HALF THAT OF THE INCIDENT BEAM
Description : A constant potential difference is applied across the plates of a parallel-plate capacitor. Neglecting any edge effects, the electric field inside the capacitor is: w) constant x) varying as one over r squared y) decreasing as one moves from the positive to the negative plate z) zero
Last Answer : ANSWER: W -- CONSTANT
Description : For a parallel-plate capacitor with plate area "A" and plate separation "d", the capacitance is proportional to which of the following? w) A divided by d squared x) A times d y) A divided by d z) d divided by A
Last Answer : ANSWER: Y -- A DIVIDED BY D
Description : One of the particles expected to be discovered at the Superconducting Super Collider is the: w) Higg's boson. x) tau meson. y) tachyon. z) anti-proton.
Last Answer : ANSWER: W -- HIGG'S BOSON.
Description : Superconducting materials are being used in the Superconducting Super Collider to: w) cool the particles. x) minimize electrical power consumption. y) maximize the acceleration potentials. z) provide radiation shielding.
Last Answer : ANSWER: X -- MINIMIZE ELECTRICAL POWER CONSUMPTION.
Description : The theory which ascribes wave-like properties to particles is called: w) general relativity x) quantum mechanics y) special relativity z) classical mechanics
Last Answer : ANSWER: X -- QUANTUM MECHANICS
Description : A proton and an alpha particle pass through the gap of a strong magnet. If both particles have the same initial velocity, how many times greater will the defection of the proton be relative to the deflection of the alpha particle? Will it be: w) the same x) 2 times y) 4 times z) 8 times
Last Answer : ANSWER: X -- 2 TIMES
Description : The temperature of a gas measures the: w) number of calories of heat present x) average kinetic energy of the particles in the gas y) exact number of particles in the gas z) potential energy of the gas
Last Answer : ANSWER: X -- AVERAGE KINETIC ENERGY OF THE PARTICLES IN THE GAS
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 : 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 : Which of the following statements is TRUE about an ELASTIC collision between two particles? Is it true that: w) neither particle loses any of its kinetic energy x) neither particle loses any of ... that lost by the other z) the total kinetic energy before and after the collision remains constant
Last Answer : ANSWER: Z -- THE TOTAL KINETIC ENERGY BEFORE AND AFTER THE COLLISION RE
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 : The random motion of particles suspended in a fluid is called: w) Boson Condensation x) Fermi Motion y) Brownian Motion z) Pauli Motion
Last Answer : ANSWER: Y -- BROWNIAN MOTION
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
Description : Alpha particles are nuclei of: w) hydrogen x) helium y) oxygen z) nitrogen
Last Answer : ANSWER: X -- HELIUM
Description : As a longitudinal wave moves through a medium, the particles of the medium: w) vibrate in a path parallel to the path of the wave x) vibrate in a path perpendicular to the path of the wave y) follow the wave along its entire path z) do not move
Last Answer : ANSWER: W -- VIBRATE IN A PATH PARALLEL TO THE PATH OF THE WAVE
Description : A perfectly spherical bubble of air is suspended in a tank of water. A beam of light consisting of parallel rays passes through the bubble. As the light emerges from the opposite side of the bubble the light rays: w) diverge x) converge y) are unaffected
Last Answer : ANSWER: W -- DIVERGE
Description : For spark ignition engine, the equivalence ratio of mixture entering the combustion chamber has values (A) for idling and for peak power conditions (B) for both idling and peak power conditions (C) for idling and for peak power conditions (D) for both idling and peak power conditions
Last Answer : ANSWER (B) for both idling and peak power conditions
Description : A semiconductor device made up of a single p-n Junction is called a: w) transistor x) diode y) Fet z) integrated circuit
Last Answer : ANSWER: X -- DIODE
Description : Which one of the following is the name of a device used to measure voltage without drawing ANY current from the circuit being measured? Is it: w) a wattmeter x) a galvanometer y) an ammeter z) a potentiometer
Last Answer : ANSWER: Z -- A POTENTIOMETER
Description : A city that suffered a major earthquake, but is not on a plate boundary, is w) Los Angeles, California x) San Francisco, California y) Tokyo, Japan z) Charleston, South Carolina
Last Answer : ANSWER: Z -- CHARLESTON, SOUTH CAROLINA
Description : which of the following radiations have least effect on both the photographic plate and zinc sulphide screen?
Last Answer : which of the following radiations have least effect on both the photographic plate and zinc sulphide ... `gamma-decays D. All have equal effect
Description : Photographic plates are covered with black paper because (a) the cellulose acetate of the paper must remain fresh (b) sunlight is easily absorbed by black paper and it helps develop the film ... paper prevents contact with light (d) the conversion of silver bromide to metallic silver is essential
Last Answer : Ans:(c)
Description : Exposure of a photographic plate to produce a latent image is an example of __________ reaction. (A) Very slow (B) Very fast (C) Photochemical (D) Both (B) and (C)
Last Answer : (D) Both (B) and (C)
Description : Function of sodium thiosulphate (hypo) in development of photographic film/plate is to (A) Brighten the faint images (B) Remove metallic silver (C) Convert silver chloride to silver (D) Remove unexposed silver halide
Last Answer : (D) Remove unexposed silver halide
Description : Zeolite is used in the (A) Water treatment (B) Glass manufacture (C) Hydrogenation of fatty oil as a catalyst (D) Development of exposed photographic plate
Last Answer : (A) Water treatment
Description : Peroxides such as hydrogen peroxide and benzoyl peroxide are commonly used in small quantities in over-the-counter preparations such as antiseptics and acne creams. What hazard do peroxides present in higher concentrations? w) explosive x) strongly acidic y) strongly basic z) there is no hazard
Last Answer : ANSWER: W -- EXPLOSIVE
Description : Which of the following atoms or ions would be the smallest? w) sodium atom x) magnesium atom y) singly charged sodium ion z) doubly charged magnesium ion
Last Answer : ANSWER: Z -- DOUBLY CHARGED MAGNESIUM ION
Description : What is a device that detects both vertically and horizontally polarized signals simultaneously? A. Orthomode transducer B. Crystal detector C. Optoisolator D. Isomode detector
Last Answer : A. Orthomode transducer
Description : ______ is a device that detects both vertically and horizontally polarized signals simultaneously. A. Crystal B. Orthomode transducer C. Light transducer D. Optoisolator
Last Answer : B. Orthomode transducer