MCAT/MCAT Physics Mcq Questions Nuclear Physics Sample Test,Sample questions

Question:
A mass spectrograph (spectrometer) sorts out

1.molecules

2.ions

3.elements

4.isotopes

Posted Date:-2021-08-29 22:49:57


Question:
A particle having the mass of an electron and the charge of a proton is called a

1.antiproton

2.positron

3.gamma rays

4.photon

Posted Date:-2021-08-29 22:49:57


Question:
According to which one of following law the density of atom is uniform?

1.J.J.Thomson model

2.Rutherfords model

3.Bohrs model

4.all of above laws contradict the statement

Posted Date:-2021-08-29 22:49:57


Question:
An ?-particle is emitted from 88Ra226. What is the mass and atomic number of the daughter nucleus?

1.224 - 84

2.220 - 80

3.222 - 86

4.226 - 87

Posted Date:-2021-08-29 22:49:57


Question:
An OP-AMP comparator is a circuit that compares the signal voltage on one of its inputs with a _

1.Non-inverting voltage at output

2.Reference voltage on the other

3.Virtual input

4.Output

Posted Date:-2021-08-29 22:49:57


Question:
An OP-AMPs can amplify

1.D.C.

2.A.C.

3.Both A.C. & D.C.

4.None of the above

Posted Date:-2021-08-29 22:49:57


Question:
Antimatter consists of

1.antiproton

2.antineutron

3.positron

4.all of above

Posted Date:-2021-08-29 22:49:57


Question:
Average energy required to remove one nucleon from the nucleus is called

1.binding energy per nucleon

2.energy of decay

3.destruction energy

4.all of above

Posted Date:-2021-08-29 22:49:57


Question:
Charge on an electron was determine by

1.Ampere

2.Maxwell

3.Millikan

4.Thomson

Posted Date:-2021-08-29 22:49:57


Question:
Charge on neutron is

1.plus 1.6 x 10-19C

2.zero

3.minus 1.6 x 10-19C

4.no definite charge

Posted Date:-2021-08-29 22:49:57


Question:
Diameter of an atom is approximately

1.10-12m

2.10-11m

3.10-10m

4.10-14m

Posted Date:-2021-08-29 22:49:57


Question:
During an encounter with an atom ?-particle knocks out

1.protons

2.electrons

3.neutrons

4.nothing

Posted Date:-2021-08-29 22:49:57


Question:
During fission process a large amount of

1.heat energy is released

2.nuclear energy is released

3.chemical energy is released

4.light energy is released

Posted Date:-2021-08-29 22:49:57


Question:
During fusion of hydrogen into helium

1.energy is absorbed

2.energy is released

3.mass is increased due to energy absorption

4.mass is reduced due to energy released

Posted Date:-2021-08-29 22:49:57


Question:
Electrons

1.can exist inside the nucleus

2.cannot exist inside the nucleus

3.can exist both inside and outside the nucleus

4.do not know

Posted Date:-2021-08-29 22:49:57


Question:
Energy liberated when one atom of U-235 undergoes fission reaction is

1.200MeV

2.40MeV

3.30MeV

4.20MeV

Posted Date:-2021-08-29 22:49:57


Question:
Fission chain reaction in a nuclear reactor can be controlled by introducing

1.iron rods

2.graphite rods

3.cadmium rods

4.platinum rods

Posted Date:-2021-08-29 22:49:57


Question:
For chain reaction to build up the size of the radioactive target should be

1.greater than the critical size

2.less than the critical size

3.equal to the critical size

4.all of above can build up a change reaction

Posted Date:-2021-08-29 22:49:57


Question:
Half life of radium is 1590 years. In how many years shall the earth loss all its radium due to radioactive decay?

1.1590x106 years

2.1590x1012 years

3.1590x1024 years

4.never

Posted Date:-2021-08-29 22:49:57


Question:
If one or more of the neutrons emitted during fission cab be used to build up further fission then the reaction is self sustained and is known as

1.fission reaction

2.fusion reaction

3.chain reaction

4.chemical reaction

Posted Date:-2021-08-29 22:49:57


Question:
In forward bias the width of potential barrier

1.Increases

2.Decreases

3.Remains same

4.No effect

Posted Date:-2021-08-29 22:49:57


Question:
In liquid metal fast breeder reactor the type of uranium used is

1.92U235

2.92U238

3.92U234

4.92U239

Posted Date:-2021-08-29 22:49:57


Question:
In nucleus of uranium the number of neutrons will be

1.92

2.235

3.143

4.different for different isotopes

Posted Date:-2021-08-29 22:49:57


Question:
Mass defect per nucleon is

1.binding energy of nucleus

2.packing fraction

3.average energy of nucleus

4.all of above are one and same thing

Posted Date:-2021-08-29 22:49:57


Question:
Mass of neutron is

1.1.67 x 10-31 kg

2.1.67 x 10-27 kg

3.9.1 x 10-31 kg

4.1.67 x 10-19 kg

Posted Date:-2021-08-29 22:49:57


Question:
Neutron and proton are commonly known as

1.nucleon

2.meson

3.boson

4.quartz

Posted Date:-2021-08-29 22:49:57


Question:
Non-inverting amplifier circuits have

1.A very high input impedance

2.A very low input impedance

3.A low output impedance

4.None of the above

Posted Date:-2021-08-29 22:49:57


Question:
Nuclear forces exist between

1.proton-proton

2.proton-neutron

3.neutron-neutron

4.all of the above

Posted Date:-2021-08-29 22:49:57


Question:
Nuclei having the same mass number but different atomic number are

1.Isotopes

2.Isobars

3.Isotones

4.Isomers

Posted Date:-2021-08-29 22:49:57


Question:
One amu is equal to

1.1.66 x 10-27kg

2.166 x 10-15ng

3.166 x 10-20?g

4.all of above

Posted Date:-2021-08-29 22:49:57


Question:
Pair production takes place in the vicinity of a heavy nucleus so that

1.net energy is conserved

2.net charge is conserved

3.net momentum is conserved

4.all of the above

Posted Date:-2021-08-29 22:49:57


Question:
Radioactive decay obeys which one of the following law?

1.N=N?e-?t

2.N=N?e?t

3.N=N?e-?t/2

4.N?=N(1+e?t)

Posted Date:-2021-08-29 22:49:57


Question:
Radioactive materials can be identified by measuring their

1.hardness

2.density

3.mass

4.half life

Posted Date:-2021-08-29 22:49:57


Question:
Radioactivity is a ______ (A) Spontaneous activity (B) Chemical property

1.A & B

2.B & C

3.C & A

4.A B & C

Posted Date:-2021-08-29 22:49:57


Question:
Sterilization of surgical instruments medical supplies and bandages can be done by exposing them to a beam of

1.?-rays

2.?-rays

3.?-rays

4.b and c have equal antiseptic properties

Posted Date:-2021-08-29 22:49:57


Question:
Sum of the masses of constituent nucleons as compared to the mass of the resultant nucleus is

1.smaller

2.greater than 82

3.same

4.some times smaller some times greater

Posted Date:-2021-08-29 22:49:57


Question:
The bombardment of nitrogen with ?-particles will produce

1.neutron

2.Proton

3.electron

4.positron

Posted Date:-2021-08-29 22:49:57


Question:
The electronic circuits which implement the various logic operations are called

1.Logic gates

2.Boolean algebra

3.Amplifier gain

4.Logic functions

Posted Date:-2021-08-29 22:49:57


Question:
The operation of a transistor requires

1.That the emitter be heated

2.That the base be heated

3.That the collector be heated

4.None of the above

Posted Date:-2021-08-29 22:49:57


Question:
The path of ?-particle is

1.rectilinear

2.curved

3.zig-zag or erratic

4.elliptical

Posted Date:-2021-08-29 22:49:57


Question:
The unit of radioactivity curie is equal to

1.3.74 x 109 disintegration per sec

2.3.70 x 1010 disintegration per sec

3.3.55 x 1010 disintegration per sec

4.3.60 x 1010 disintegration per sec

Posted Date:-2021-08-29 22:49:57


Question:
The working of transistor as amplifier is similar to

1.Step up transformer

2.Step down transformer

3.Three diodes in common

4.Triode vacuum tube

Posted Date:-2021-08-29 22:49:57


Question:
Tick the correct statement

1.moderators slow down the neutrons

2.moderators bring the neutrons to rest

3.moderators absorb the neutrons

4.moderators reflect the neutrons

Posted Date:-2021-08-29 22:49:57


Question:
To obtain a p-type semi-conductor Si Crystal must be doped with foreign atoms whose valency is

1.2

2.3

3.4

4.5

Posted Date:-2021-08-29 22:49:57


Question:
To obtain an n-type semiconductor germanium crystal it must be doped with foreign atoms whose valency is

1.2

2.3

3.4

4.5

Posted Date:-2021-08-29 22:49:57


Question:
Transuranic elements have atomic number

1.greater than 72

2.greater than 82

3.greater than 92

4.greater than 102

Posted Date:-2021-08-29 22:49:57


Question:
Various types of cancer are treated by

1.cobalt-60

2.strontium-90

3.carbon-14

4.nickel-63

Posted Date:-2021-08-29 22:49:57


Question:
Which of the following radiations are suitable for the treatment of an infection in the interior of the body ?

1.?-rays

2.?-rays

3.?-rays

4.X-rays

Posted Date:-2021-08-29 22:49:57


Question:
Which one of the following radiation possesses maximum penetrating power?

1.?-rays

2.?-rays

3.?-rays

4.all have equal penetrating power

Posted Date:-2021-08-29 22:49:57


Question:
Which one of the following radiations possesses maximum velocity?

1.?-rays

2.?-rays

3.?-rays

4.all of above have same speed

Posted Date:-2021-08-29 22:49:57


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