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PHYSICS MCQs

Total Questions : 3767 | Page 19 of 377 pages
Question 181. If an electron and a photon have the same wavelength, then they will have the same
  1.    Velocity
  2.    Linear momentum
  3.    Angular momentum
  4.    Energy
 Discuss Question
Answer: Option B. -> Linear momentum
Question 182. A ball is thrown vertically upward from the ground. It crosses a point at the height of 25 m twice at an interval of 4 seconds. The ball was thrown with the velocity of
  1.    18 m/s
  2.    25 m/s
  3.    30 m/s
  4.    36 m/s
 Discuss Question
Answer: Option C. -> 30 m/s
Question 183. Rain drops fall from great height. Which among the following statements is true regarding it?
  1.    They fall with that ultimate velocity, which are different for different droplets
  2.    They fall with same ultimate velocity
  3.    Their velocity increases and they fall with different velocity on the earth
  4.    Their velocity increases and they fall with same velocity on the earth
 Discuss Question
Answer: Option A. -> They fall with that ultimate velocity, which are different for different droplets
Question 184. A particle dropped from the top of a tower uniformly falls on ground at a distance which is equal to the height of tower. Which of the following paths will be traversed by the particle ?
  1.    Circle
  2.    Parabolic
  3.    Great circle
  4.    Hyper–parabolic
 Discuss Question
Answer: Option B. -> Parabolic
Question 185. A particle is thrown vertically upward. When it reaches the highest point, it has
  1.    A downward acceleration
  2.    An upward acceleration
  3.    A downward velocity
  4.    A horizontal velocity
 Discuss Question
Answer: Option A. -> A downward acceleration
Question 186. The quantity that is not conserved in an inelastic collision is
  1.    Momentum
  2.    Kinetic Energy
  3.    Total Energy
  4.    All of these
 Discuss Question
Answer: Option B. -> Kinetic Energy
Question 187. The dimension MLT–2 corresponds to
  1.    Force
  2.    Work done
  3.    Acceleration
  4.    Velocity
 Discuss Question
Answer: Option A. -> Force
Question 188. The force that generates wind is
  1.    Gravity force
  2.    Pressure gradient force
  3.    Coriolis force
  4.    Centrifugal force
 Discuss Question
Answer: Option B. -> Pressure gradient force
Question 189. If lift is going up with acceleration, the apparent weight of a body is
  1.    May be more or less than true weight
  2.    More than the true weight
  3.    Less than the true weight
  4.    Equal to the true weight
 Discuss Question
Answer: Option B. -> More than the true weight
Question 190. A boy sitting in a train moving with a uniform velocity drops a coin outside. A man standing outside the train will find the trajectory of the coin to be
  1.    A parabola
  2.    A circle
  3.    A horizontal straight line
  4.    A vertical straight line
 Discuss Question
Answer: Option A. -> A parabola

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