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Physics Mcqs

According to Pascals law the pressure of gas in a vessel is_____________?

  • (A)  Different in different direction
  • (B)  Same in all direction
  • (C)  Same only along opposite directions
  • (D)  Same only along normal directions
Submitted By :Ali Uppal


In which process all the heat supplied is converted into work done ?

  • (A)  isothermal
  • (B)  isochoric
  • (C)  isobaric
  • (D)  isentropic
Submitted By :Ali Uppal


The performance of a refrigerator is described by________________?

  • (A)  efficiency
  • (B)  coefficient of performance
  • (C)  both A and B
  • (D)  not described
Submitted By :Ali Uppal


The unit of entropy is________________?

  • (A)  J.K
  • (B)  J/K
  • (C)  N.m/sec
  • (D)  Kgm2/sec2.K
Submitted By :Ali Uppal


Which quantity is a state function_______________?

  • (A)  internal energy
  • (B)  heat supply
  • (C)  pressure
  • (D)  volume
Submitted By :Ali Uppal


Petrol engine is a________________?

  • (A)  C.I engine
  • (B)  SI engine
  • (C)  IC engine
  • (D)  all the above
Submitted By :Ali Uppal


The purpose of flywheel in the engines is________________?

  • (A)  to smooth out the energy variation
  • (B)  to add more weight to engine to work it stable
  • (C)  to start engine
  • (D)  both A and B
Submitted By :Ali Uppal


For the successful operation of Heat engine which condition should be met ?

  • (A)  cyclic process
  • (B)  operated at certain temperature difference
  • (C)  both A and B
  • (D)  none of these
Submitted By :Ali Uppal


The work done in the isochoric process is________________?

  • (A)  constant
  • (B)  variable
  • (C)  zero
  • (D)  depends on situation
Submitted By :Ali Uppal


Adiabatic process is also called______________?

  • (A)  Heat exchange process
  • (B)  Heating process
  • (C)  Isentropic process
  • (D)  All of the above
Submitted By :Ali Uppal