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PHYSICS MCQs

Total Questions : 3767 | Page 71 of 377 pages
Question 701. In a refrigerator what produces the cooling ?
  1.    The ice which deposits on the freezer
  2.    The sudden expansion of a compressed gas
  3.    The evaporation of a volatile liquid
  4.    None of these
 Discuss Question
Answer: Option D. -> None of these
Question 702. Which of the following has the highest entropy?
  1.    Hydrogen
  2.    Diamond
  3.    Liquid nitrogen
  4.    Mercury
 Discuss Question
Answer: Option A. -> Hydrogen
Question 703. Which of these branches of Physics deal with heat and temperature and their relation to energy and work?
  1.    Geophysics
  2.    Mechanics
  3.    Atomic Physics
  4.    Thermodynamics
 Discuss Question
Answer: Option D. -> Thermodynamics
Question 704. The characteristic invalid for heat radiation is that it travels :
  1.    In a straight line
  2.    In all directions
  3.    With the speed of light
  4.    Heating the medium through which it passes
 Discuss Question
Answer: Option C. -> With the speed of light
Question 705. A cycle tyre bursts suddenly. This represents an :
  1.    Isothermal process
  2.    Adiabatic process
  3.    Isochoric process
  4.    Isoboric process
 Discuss Question
Answer: Option B. -> Adiabatic process
Question 706. Which has the lowest albedo?
  1.    Dark surfaces
  2.    Light surfaces
  3.    Both A & B
  4.    None of the above
 Discuss Question
Answer: Option A. -> Dark surfaces
Question 707. Which one of the following is a non-dimensional quantity?
  1.    Gas constant
  2.    Strain
  3.    Co-efficient of viscocity
  4.    Plank's constant
 Discuss Question
Answer: Option B. -> Strain
Question 708. The recoiling of gun is an example of which of the following?
  1.    Law of Conservation of Angular Momentum
  2.    Law of Conservation of Linear Momentum
  3.    Conversion of Kinetic Energy to Potential Energy
  4.    Law of Conservation of Energy
 Discuss Question
Answer: Option B. -> Law of Conservation of Linear Momentum
Question 709. The dimension of Planck constant equals to that of
  1.    Energy
  2.    Momentum
  3.    Angular momentum
  4.    Power
 Discuss Question
Answer: Option C. -> Angular momentum
Question 710. The dimensional formula for universal gravitational constant is
  1.    M 1L3T2
  2.    ML2T–2
  3.    M–2
  4.    M–1L3T–2
 Discuss Question
Answer: Option D. -> M–1L3T–2

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