JEE Questions for Physics Units And Measurements Quiz 4 - MCQExams.com

When charges are at rest the force is given by ............... law.
  • coulomb’s
  • Newton’s
  • Ampere’s
  • Faraday’s
The ................ force is the force of mutual attraction between any two objects by virtue of their masses.
  • Weak
  • Electromagnetic
  • Nuclear
  • Gravitational
The ............... force is the strongest of all fundamental forces.
  • nuclear
  • Electromagnetic
  • Gravitational
  • Weak nuclear
Electromagnetic force is ...............
  • attractive force only
  • attractive and repulsive force
  • repulsive force only
  • a short range force
Which of the following force binds The particle in the nucleons ?
  • Electromagnetic force
  • Strong force
  • Gravitational force
  • Weak force
Electromagnetic force is ............... range force
  • Short
  • long
  • medium
  • very short
Quarks - Quarks force is produced between -
  • Proton - neutron
  • proton - proton
  • neutron - neutron
  • (a),(b), (c) are true
Which particle are emitted during the β decay from the nucleus ?
  • neutron and proton
  • electron and neutrino
  • electron and neutron
  • electron and proton
............... and ............... law’s are called inverse square law
  • Gravitation and weak
  • Coulomb’s and strong
  • Gravitation and coulomb’s
  • Electromagnetic and coulomb’s
Which property of object is responsible for the electric force ?
  • electric charge
  • pressure
  • volume
  • mass
Which property of object is responsible for the Gravitational force.
  • electric charge
  • mass
  • pressure
  • volume
Who has unified electromagnetism and optics ?
  • Newton
  • Maxwell
  • Coulomb
  • Faraday
Who has unified terrestrial and celestial domains under a common law of Gravitational
  • Newton
  • Maxwell
  • Coulomb
  • Faraday
The weak nuclear force, Gravitational force and electromagnetic force are A, B and C Respectively then ...............
  • C > A > B
  • C > A < B
  • B > A > C
  • C < A < B
Space is homogeneous and isotropic so ............... law of servation is the result of this
  • linear and angular momentum
  • energy and charge
  • angular and linear momentum
  • charge and energy
Time is homogeneous so ............... law of conserbation is the result of this
  • angular momentum
  • linear momentum
  • energy
  • charge
The basic reason behind existence of which conservation of law is still not known ?
  • angular momentum
  • linear momentum
  • energy
  • charge
The Gravitational force between any two body charges with distance as F ∝ rn where n = ..........
  • –1
  • 2
  • –3
  • –2
Match the column
Physics-Units and Measurements-93201.png
  • 1 – (S), 2 – (P), 3 – (R), 4 – (Q)
  • 1 – (P), 2 – (S), 3 – (R), 4 – (Q)
  • 1 – (S), 2 – (P), 3 – (Q), 4 – (R)
  • 1 – (R), 2 – (Q), 3 – (P), 4 – (S)
Which of the following unit is not of length ?
  • light year
  • fermi
  • Å
  • becquerel
How many fundamental units are there in SI system ?
  • 5
  • 7
  • 6
  • 4
Which of the following physical quantity is fundamental ?
  • viscosity
  • velocity
  • force
  • time
Poise is the unit of
  • viscosity
  • velocity
  • force
  • time
Which unit of physical quantity remains same for all unit system ?
  • meter
  • second
  • ampere
  • kilogram
Which of the following system of unit is not based on only units of mass length and time.
  • SI
  • MKS
  • CGS
  • FPS
Which of the following symbol of unit does not follow practical norms for the use of SI system ?
  • Kg
  • kg
  • k
  • A
Why derive luminous intensity symbol form of SI system ?
  • cd
  • Cd
  • cd.
  • CD
What is the ratio of 10 micron to 1 nanometer?
  • 104
  • 103
  • 1016
  • 1015
100 watt hour = ............... joule.

  • Physics-Units and Measurements-93202.png
  • 2)
    Physics-Units and Measurements-93203.png

  • Physics-Units and Measurements-93204.png

  • Physics-Units and Measurements-93205.png
1 Mev = ............... ev
  • 107
  • 104
  • 105
  • 106
Wave length of light radiation 0.000015 m = ...............
  • 15 micron
  • 1.5 micron
  • 150 micron
  • 0.15 micron
1o = ...............
  • 600''
  • 3600''
  • 180''
  • 3600'
1 rad = ...............

  • Physics-Units and Measurements-93206.png
  • 2)
    Physics-Units and Measurements-93207.png

  • Physics-Units and Measurements-93208.png

  • Physics-Units and Measurements-93209.png
Which of the following unit does not represent the unit of power ?
  • ampere/volt
  • (ampere)2 × ohm
  • joule/second
  • ampere × volt
Write the unit of angular acceleration in the SI system.
  • N.Kg
  • rad/(sec)2
  • m/sec
  • N/kg
unit of universal gravitational constant is ...............
  • Kg m sec–1
  • N m–1 sec
  • N m2 kg–2
  • N m kg–1
The unit of Stefan Boltzmann constant (σ) is ...............
  • w2 m–2 k–1
  • w m2 k–3
  • w m–2 k4
  • w m–2 k–4
Unit of momentum physical quantity ?
  • newton - second
  • newton/second
  • Jule
  • Jule/second
Light year is a unit of ...............
  • Mass
  • volume
  • density
  • Distance
Joule/seed is the unit of ...............
  • Work
  • angular momentum
  • Pressure
  • Energy
The SI unit of momentum is ...............
  • kg × newton
  • kg m–2 s2
  • kg m–1
  • kg ms–1
Volt/meter is the unit of ...............
  • Work
  • viscosity
  • Electric fild intensity
  • velocity
The force F is represented by equation F = Pl–1 + Ql, where l is the length. The unit of P is same as that of ...............
  • Surface tension
  • velocity
  • force
  • momentum
Which physical quantity has unit of pascal – second ?
  • Velocity
  • viscocity
  • energy
  • coefficient of viscocity
Which physical quantity has unit of joule – second ?
  • velocity
  • plank’s constant
  • energy
  • vescocity
What is the least count of vernier calipers?
  • 10–4 m
  • 10–5 m
  • 10–2 m
  • 10–3 m
What is the least count of screw gauge?
  • 10–4 m
  • 10–5 m
  • 10–2 m
  • 10–3 m
For measurement of astronomical distance ............... is used.
  • vernier callipers
  • spherometer
  • screwgauge
  • indirect method
Which microscope is used to measure the dimension of particle having dimension less than 4000 Å ?
  • electron microscope
  • simple microscope
  • optical microscope
  • none of above
In electron microscope electron behave like ...............
  • charge
  • mass
  • particles
  • wave
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