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PHYSICS MCQs

Total Questions : 3767 | Page 67 of 377 pages
Question 661. The Hydraulic Break works on the principle of ________ .
  1.    Pascal's Law
  2.    Boyle's law
  3.    Coulomb's law
  4.    Bernouli's law
 Discuss Question
Answer: Option A. -> Pascal's Law
Question 662. Hydraulic brakes work on the principle of
  1.    Thomson's law
  2.    Newton's law
  3.    Bernoulli's theorem
  4.    Pascal's law
 Discuss Question
Answer: Option D. -> Pascal's law
Question 663. What principle/law explains the working of the hydraulic brakes in automobiles ?
  1.    Bernoulli's law
  2.    Posieulle's principle
  3.    Pascal's law
  4.    Archimedes' principle
 Discuss Question
Answer: Option C. -> Pascal's law
Question 664. Air moves from the region where the air ________
  1.    Humidity is high to the region where the humidity is low
  2.    Pressure is low to the region where the pressure is high
  3.    Pressure is high to the region where the pressure is low
  4.    Humidity is low to the region where the humidity is high
 Discuss Question
Answer: Option C. -> Pressure is high to the region where the pressure is low
Question 665. The hydraulic brakes used in automobiles is a direct application of :
  1.    Archimedes' principle
  2.    Toricellian law
  3.    Bernoulli's theorem
  4.    Pascal's law
 Discuss Question
Answer: Option D. -> Pascal's law
Question 666. For which of the following game, players must have the knowledge of Pascal's law?
  1.    Climbing
  2.    Paragliding
  3.    Rafting
  4.    Scuba diving
 Discuss Question
Answer: Option D. -> Scuba diving
Question 667. If we want to calculate the pressure of a liquid at the bottom of a vessel, the quantity which is not required to determine it, is
  1.    Height of the liquid column
  2.    Surface area of the bottom of the vessel
  3.    Density of the liquid
  4.    Acceleration due to gravity at the bottom of the vessel
 Discuss Question
Answer: Option B. -> Surface area of the bottom of the vessel
Question 668. Air pressure is usually highest when the air is
  1.    Warm and moist
  2.    Cool and dry
  3.    Warm and dry
  4.    Cool and moist
 Discuss Question
Answer: Option D. -> Cool and moist
Question 669. Which process allows water to enter the atmosphere?
  1.    Transpiration
  2.    Respiration
  3.    Condensation
  4.    Evaporation
 Discuss Question
Answer: Option D. -> Evaporation
Question 670. The velocity of sound in moist air is more than in dry air because the moist air has
  1.    Less density than dry air.
  2.    Less pressure than dry air.
  3.    More pressure than dry air.
  4.    More density than dry air.
 Discuss Question
Answer: Option A. -> Less density than dry air.

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