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PHYSICS MCQs

Total Questions : 3767 | Page 17 of 377 pages
Question 161. When all the forces and torques are balanced in a mechanical body it is said to be in
  1.    Equilibrium
  2.    Static
  3.    Buoyancy
  4.    None of the above
 Discuss Question
Answer: Option A. -> Equilibrium
Question 162. Centrifugal force increases with
  1.    Temperature
  2.    Pressure
  3.    Acceleration
  4.    Humidity
 Discuss Question
Answer: Option C. -> Acceleration
Question 163. When milk is churned, the cream separates from it due to:
  1.    Frictional force
  2.    Centrifugal force
  3.    Gravitational force
  4.    Viscous forces
 Discuss Question
Answer: Option B. -> Centrifugal force
Question 164. The minimum number of forces to keep a particle in equilibrium is
  1.    1
  2.    2
  3.    3
  4.    4
 Discuss Question
Answer: Option B. -> 2
Question 165. When the milk is churned vigorously the cream from it is separated out due to
  1.    Centripetal force
  2.    Gravitational force
  3.    Frictional force
  4.    Centrifugal force
 Discuss Question
Answer: Option D. -> Centrifugal force
Question 166. A man stands on the pan of a balance holding a fish in his right hand and bucket of water in his left hand. If he transfers the fish into the bucket, the total weight on the pan
  1.    Increases
  2.    Decreases
  3.    Remains the same
  4.    First increases and then decreases
 Discuss Question
Answer: Option C. -> Remains the same
Question 167. A boy is swinging a ball attached to a string in a horizontal circle. If the string snaps
  1.    The ball will travel towards the center of the circle and fall down
  2.    It will continue to travel along a tangent to the circle at the point the ball was at the time of snapping and finally fall down
  3.    It will fall down at the same place where the string breaks
  4.    None of these
 Discuss Question
Answer: Option B. -> It will continue to travel along a tangent to the circle at the point the ball was at the time of snapping and finally fall down
Question 168. The angle in which a cricket ball should be hit to travel maximum horizontal distance is :
  1.    60° with horizontal
  2.    45° with horizontal
  3.    30° with horizontal
  4.    15° with horizontal
 Discuss Question
Answer: Option B. -> 45° with horizontal
Question 169. A body moving in a circular path with a constant speed has a
  1.    Constant velocity
  2.    Constant acceleration
  3.    Constant kinetic energy
  4.    Constant displacement
 Discuss Question
Answer: Option C. -> Constant kinetic energy
Question 170. The point where total mass of a body is supposed to be concentrated is known as
  1.    Dead centre
  2.    Centre of mass
  3.    Centre of gravity
  4.    Centre of motion
 Discuss Question
Answer: Option B. -> Centre of mass

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