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MCQs

Total Questions : 1187 | Page 115 of 119 pages
Question 1141. The velocity of a particle moving with simple harmonic motion is _________ at the mean position.
  1.    Zero
  2.    None of these
  3.    Maximum
  4.    Minimum
 Discuss Question
Answer: Option C. -> Maximum
Question 1142. The time of flight (t) of a projectile on an upward inclined plane is(where u = Velocity of projection, α = Angle of projection, and β = Inclination of the plane with the horizontal.)
  1.    t = g cos β/2u sin (α - β)
  2.    t = 2u sin (α + β)/g cos β
  3.    t = g cos β/2u sin (α + β)
  4.    t = 2u sin (α - β)/g cos β
 Discuss Question
Answer: Option D. -> t = 2u sin (α - β)/g cos β
Question 1143. A spherical body is symmetrical about its perpendicular axis. According to Routh's rule, the moment of inertia of a body about an axis passing through its centre of gravity is (where, M = Mass of the body, and S = Sum of the squares of the two semi-axes.)
  1.    MS/5
  2.    MS/3
  3.    None of these
  4.    MS/4
 Discuss Question
Answer: Option A. -> MS/5
Question 1144. One kg force is equal to
  1.    12 N
  2.    9.8 N
  3.    8.9 N
  4.    7.8 N
 Discuss Question
Answer: Option B. -> 9.8 N
Question 1145. One joule means that
  1.    Work is done by a force of 1 g when it displaces a body through 1 cm
  2.    Work is done by a force of 1 N when it displaces a body through 1 m
  3.    Work is done by a force of 1 kg when it displaces a body through 1 m
  4.    Work is done by a force of 1 dyne when it displaces a body through 1 cm
 Discuss Question
Answer: Option B. -> Work is done by a force of 1 N when it displaces a body through 1 m
Question 1146. If a body is acted upon by a number of coplanar non-concurrent forces, it may
  1.    All of these
  2.    Be completely at rest
  3.    Move in any one direction rotating about itself
  4.    Rotate about itself without moving
 Discuss Question
Answer: Option A. -> All of these
Question 1147. The rate of change of momentum is directly proportional to the impressed force, and takes place in the same direction in which the force acts. This statement is known as
  1.    None of these
  2.    Newton's second law of motion
  3.    Newton's third law of motion
  4.    Newton's first law of motion
 Discuss Question
Answer: Option B. -> Newton's second law of motion
Question 1148. When a body falls freely under gravitational force, it possesses __________ weight.
  1.    None of these
  2.    Minimum
  3.    Maximum
  4.    No
 Discuss Question
Answer: Option D. -> No
Question 1149. The total energy possessed by a system of moving bodies
  1.    Varies from point to point
  2.    Is minimum in the start and maximum at the end
  3.    Is constant at every instant
  4.    Is maximum in the start and minimum at the end
 Discuss Question
Answer: Option C. -> Is constant at every instant
Question 1150. The force applied on a body of mass 100 kg to produce an acceleration of 5 m/s2, is
  1.    500 N
  2.    None of these
  3.    100 N
  4.    20 N
 Discuss Question
Answer: Option A. -> 500 N

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