Lakshya Education MCQs

Question: Joule is the unit of
Options:
A. Power
B. Impulse
C. Work
D. Momentum
Answer: Option C

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Question 1. The moment of inertia of a triangular section (base b, height h) about centroidal axis parallel to the base, is
  1.     b³h/12
  2.     bh³/3
  3.     bh³/36
  4.     bh³/2
Answer: Option C
Question 2. Newton’s law of motion is:
  1.     Everybody continues in its state of rest or of uniform motion in a straight line, unless it is acted upon by some external force
  2.     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
  3.     To every action, there is always an equal and opposite reaction
  4.     All the above
Answer: Option D
Question 3. The point about which combined motion of rotation and translation of a rigid body takes place, is known as
  1.     Virtual centre
  2.     Instantaneous centre
  3.     Instantaneous axis
  4.     Point of rotation
Answer: Option B
Question 4. The point about which combined motion of rotation and translation of a rigid body takes place, is known as
  1.     Virtual centre
  2.     Instantaneous centre
  3.     Instantaneous axis
  4.     Point of rotation
Answer: Option B
Question 5. The moment of inertia of a triangular section (base b, height h) about centroidal axis parallel to the base, is
  1.     b³h/12
  2.     bh³/3
  3.     bh³/36
  4.     bh³/2
Answer: Option C
Question 6. Newton’s law of motion is:
  1.     Everybody continues in its state of rest or of uniform motion in a straight line, unless it is acted upon by some external force
  2.     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
  3.     To every action, there is always an equal and opposite reaction
  4.     All the above
Answer: Option D

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