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PHYSICS MCQs

Total Questions : 3767 | Page 72 of 377 pages
Question 711. Period of oscillation of 3 cm microwaves in seconds is
  1.    1 × 1010
  2.    1 × 10–10
  3.    0.01
  4.    0.001
 Discuss Question
Answer: Option B. -> 1 × 10–10
Question 712. Which one of the following physical quantities has the same dimensions as that of Planck's constant?
  1.    Linear momentum
  2.    Angular momentum
  3.    Force
  4.    Potential energy
 Discuss Question
Answer: Option B. -> Angular momentum
Question 713. When a person sitting on a swing stands up on the swing, the frequency of oscillation
  1.    Decreases
  2.    Increases
  3.    Becomes infinite
  4.    Does not change
 Discuss Question
Answer: Option B. -> Increases
Question 714. A system exhibiting S.H.M. must possess
  1.    Elasticity as well as inertia
  2.    Elasticity, inertia and an external force
  3.    Elasticity only
  4.    Inertia only
 Discuss Question
Answer: Option A. -> Elasticity as well as inertia
Question 715. Which of the following is an example of simple harmonic motion?
  1.    Earth spinning on its axis
  2.    Simple pendulum motion
  3.    Ball bouncing on floor
  4.    Motion of a ceiling fan
 Discuss Question
Answer: Option B. -> Simple pendulum motion
Question 716. Boyle's law is a relationship between
  1.    Pressure and volume
  2.    Volume and temperature
  3.    Volume and density
  4.    Pressure and temperature
 Discuss Question
Answer: Option A. -> Pressure and volume
Question 717. Which of the metals has the maximum thermal conductivity?
  1.    Iron
  2.    Aluminium
  3.    Silver
  4.    Copper
 Discuss Question
Answer: Option C. -> Silver
Question 718. Which law relates to the ideal gas law?
  1.    P1T1 = P2T2
  2.    P1/V1 = P2/V2
  3.    P1V1 = P2V2
  4.    T1/V1 = T2/V2
 Discuss Question
Answer: Option C. -> P1V1 = P2V2
Question 719. A solid ball of metal has a spherical cavity inside it. When the ball is heated the volume of the cavity will
  1.    Increase
  2.    Decrease
  3.    Remain unaffected
  4.    Have its shape changed
 Discuss Question
Answer: Option A. -> Increase
Question 720. The oil in the wick of lamp rises due to
  1.    Pressure difference
  2.    Pheonomenon of capillarity
  3.    Low viscosity of oil
  4.    Force of cohesion
 Discuss Question
Answer: Option B. -> Pheonomenon of capillarity

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