Lakshya Education MCQs

Question: It is easier to carry two buckets of water in one hand each, than to carry only one in one hand because
Options:
A.Weights of buckets are balanced
B.Centre of gravity falls within the body
C.Centre of gravity and centre of equilibrium fall within the feet
D.Resultant weight of buckets is zero
Answer: Option C

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More Questions on This Topic :

Question 1. A bomb at rest explodes into a large number of tiny fragments. The total momentum of all the fragments
  1.    Is zero
  2.    Depends on the total mass of all the fragments
  3.    Depends on the speeds of various fragments
  4.    Is infinity
Answer: Option A
Question 2. The working of a rocket is based on the principle of:
  1.    Conservation of momentum
  2.    Conservation of mass
  3.    Conservation of energy
  4.    Conservation of angular momentum
Answer: Option A
Question 3. A man standing at the top of a tower has two spheres A and B. He drops sphere A downwards and throws sphere B horizontally at the same time. Which of the following is correct ?
  1.    Both the spheres will reach the ground simultaneously.
  2.    A will reach the ground first.
  3.    B will reach the ground first.
  4.    The question is incomplete because the masses of the spheres are not given.
Answer: Option A
Question 4. The force that keeps a body in a circular motion called
  1.    The centripetal force
  2.    The centrifugual force
  3.    The frictional force
  4.    All the above
Answer: Option A
Question 5. What is the change in the angular momentum of a system as per the Law of Conservation of Angular momentum, if the total external torque acting is zero?
  1.    Remains constant
  2.    Becomes zero
  3.    Increases exponentially
  4.    None of the above
Answer: Option A
Question 6. 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
Answer: Option B

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