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PHYSICS MCQs

Total Questions : 3767 | Page 55 of 377 pages
Question 541. The energy associated with motion is called
  1.    Potential energy
  2.    Kinetic energy
  3.    Both A & B
  4.    None of the above
 Discuss Question
Answer: Option B. -> Kinetic energy
Question 542. The boiling point of water decreases at higher altitudes is due to
  1.    Low temperature
  2.    Low atmospheric pressure
  3.    High temprature
  4.    High atmospheric pressure
 Discuss Question
Answer: Option B. -> Low atmospheric pressure
Question 543. At boiling point of liquids, its
  1.    Temperature increases
  2.    Atmospheric pressure increases
  3.    Temperature remains constant
  4.    Vapour pressure decreases
 Discuss Question
Answer: Option C. -> Temperature remains constant
Question 544. Contact force is another name for ________
  1.    Friction
  2.    Magnetic force
  3.    Electrostatic force
  4.    Muscular force
 Discuss Question
Answer: Option D. -> Muscular force
Question 545. The rotational effect of a force on a body about an axis of rotation is described in terms of
  1.    Centre of gravity
  2.    Centripetal force
  3.    Centrifugal force
  4.    Moment of force
 Discuss Question
Answer: Option D. -> Moment of force
Question 546. At hill stations, the boiling point of water will be
  1.    Same as at sea level
  2.    Less than that at sea level
  3.    More than that at sea level
  4.    Equal to the melting point of ice
 Discuss Question
Answer: Option B. -> Less than that at sea level
Question 547. Instrument used to measure the force and velocity of the wind is
  1.    Ammeter
  2.    Anemometer
  3.    Altimeter
  4.    Audiometer
 Discuss Question
Answer: Option B. -> Anemometer
Question 548. When pressure is increased the melting point of ice
  1.    Increases
  2.    Does not change
  3.    Decreases
  4.    Depends on the impurities in the ice
 Discuss Question
Answer: Option C. -> Decreases
Question 549. The wall of a dam is made thicker at the bottom than at the top because the pressure exerted by the water on the wall
  1.    Depends on the thickness of the wall
  2.    Increases with height of the wall
  3.    Increases with depth of the wall
  4.    Depends on the area of the wall
 Discuss Question
Answer: Option C. -> Increases with depth of the wall
Question 550. The wall of a dam is broader at the base
  1.    Because streamlining is required
  2.    To withstand pressure that increases with depth
  3.    To withstand pressure that increases in a horizontal plane
  4.    To withstand pressure that is increased with atmospheric pressure
 Discuss Question
Answer: Option B. -> To withstand pressure that increases with depth

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