Lakshya Education MCQs

Question: The velocity ratio for the first system of pulleys is (where n is the number of pulleys.)
Options:
A. n
B. n²
C. 2n
D. 2n - 1
Answer: Option C

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Question 1. If a suspended body is struck at the center of percussion, then the pressure on die axis passing through the point of suspension will be
  1.     Maximum
  2.     Minimum
  3.     Zero
  4.     Infinity
Answer: Option C
Question 2. Which of the following statement is correct in connection with projectiles?
  1.     A path, traced by a projectile in the space, is known as trajectory.
  2.     The velocity, with which a projectile is projected, is known as the velocity of projection.
  3.     The angle, with the horizontal, at which a projectile is projected, is known as angle of projection.
  4.     All of the above
Answer: Option D
Question 3. The periodic time of one oscillation for a simple pendulum is (where l = length of the pendulum.)
  1.     (1/2π). √(l/g)
  2.     (1/2π). √(g/l)
  3.     2π. √(l/g)
  4.     None of these
Answer: Option C
Question 4. The periodic time of one oscillation for a simple pendulum is (where l = length of the pendulum.)
  1.     (1/2π). √(l/g)
  2.     (1/2π). √(g/l)
  3.     2π. √(l/g)
  4.     None of these
Answer: Option C
Question 5. The ratio of static friction to dynamic friction is always
  1.     Equal to one
  2.     Less than one
  3.     Greater than one
  4.     None of these
Answer: Option C
Question 6. Which of the following statement is correct in connection with projectiles?
  1.     A path, traced by a projectile in the space, is known as trajectory.
  2.     The velocity, with which a projectile is projected, is known as the velocity of projection.
  3.     The angle, with the horizontal, at which a projectile is projected, is known as angle of projection.
  4.     All of the above
Answer: Option D

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