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MCQs

Total Questions : 1187 | Page 114 of 119 pages
Question 1131. If the resultant of two equal forces has the same magnitude as either of the forces, then the angle between the two forces is
  1.    60°
  2.    120°
  3.    90°
  4.    30°
 Discuss Question
Answer: Option B. -> 120°
Question 1132. A rubber ball is dropped from a height of 2 m. If there is no loss of velocity after rebounding, the ball will rise to a height of
  1.    2 m
  2.    3 m
  3.    4 m
  4.    1 m
 Discuss Question
Answer: Option A. -> 2 m
Question 1133. The acceleration of a particle moving with simple harmonic motion is __________ at the mean position.
  1.    Minimum
  2.    Zero
  3.    Maximum
  4.    None of these
 Discuss Question
Answer: Option B. -> Zero
Question 1134. The forces, which meet at one point and their lines of action also lie on the same plane, are known as
  1.    Coplanar concurrent forces
  2.    Non-coplanar non-concurrent forces
  3.    Non-coplanar concurrent forces
  4.    Coplanar non-concurrent forces
 Discuss Question
Answer: Option A. -> Coplanar concurrent forces
Question 1135. If u₁ and u₂ are the velocities of two moving bodies in the same direction before impact and v₁ and v₂ are their velocities after impact, then coefficient of restitution is given by
  1.    (v₁ - v₂)/(u₁ - u₂)
  2.    (v₂ - v₁)/(u₁ - u₂)
  3.    (u₁ - u₂)/(v₁ - v₂)
  4.    (u₂ + u₁)/(v₂ + v₁)
 Discuss Question
Answer: Option B. -> (v₂ - v₁)/(u₁ - u₂)
Question 1136. The centre of percussion of the homogeneous rod of length ‘L’ suspended at the top will be
  1.    2L/3
  2.    L/3
  3.    3L/4
  4.    L/2
 Discuss Question
Answer: Option A. -> 2L/3
Question 1137. The units of moment of inertia of mass are
  1.    kg/m
  2.    kg/m²
  3.    kg-m²
  4.    m²/kg
 Discuss Question
Answer: Option C. -> kg-m²
Question 1138. Mass moment of inertia of a uniform thin rod of mass M and length (l) about its mid-point and perpendicular to its length is
  1.    (3/4) Ml²
  2.    (1/3) Ml²
  3.    (1/12) Ml²
  4.    (2/3) Ml²
 Discuss Question
Answer: Option C. -> (1/12) Ml²
Question 1139. A body of mass ‘m’ moving with a constant velocity ‘v’ strikes another body of same mass moving with same velocity but in opposite direction. The common velocity of both the bodies after collision is
  1.    4v
  2.    8v
  3.    2v
  4.    v
 Discuss Question
Answer: Option C. -> 2v
Question 1140. One joule is equal to
  1.    1 N-m
  2.    10 N-m
  3.    0.1 N-m
  4.    100 N-m
 Discuss Question
Answer: Option A. -> 1 N-m

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