NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions


Two particles of mass m1 and m2 approach each other due to their mutual gravitational attraction only. Then

  • accelerations of both the particles are equal

  • acceleration of the particle of mass m1 is proportional to m1

  • acceleration of the particle of mass m1 is proportional to m2

  • acceleration of the particle of mass m1 is inversely proportional to m1


A satellite has kinetic energy K, potential energy V and total energy E. Which of the following statements is true ?

  • K = − V/2

  • K = V/2

  • E = K/2

  • E = − K/2


A large number of particles are placed around the origin, each at a distance R from the origin. The distance of the centre of mass of the system from the origin is

  • equal to R

  • less than equal to R

  • greater than R

  • greater than equal to R


Two particles A and B are moving as shown in the figure.


Their total angular momentum about the point O is

  • 9.8 kg m2 / s

  • zero

  • 52.7 kg m2 / s

  • 37.9 kg m2 / s


Particle A moves along X-axis with a uniform velocity of magnitude 10 m/s. Particle B moves with uniform velocity 20 m/s along a direction making an angle of 60° with the positive direction of X-axis as shown in the figure. The relative velocity of B with respect to that of A is


  • 10 m/s along X-axis

  • 103  m/s along Y-axis (perpendicular to X-axis)

  • 105 m/s along the bisection of the velocities of A and B

  • 30 m/s along negative X-axis


Block B lying on a table weighs W. The coefficient of static friction between the block and the table is µ. Assume that the cord between B and the knot is horizontal. The maximum weight of the block A for which the system will be stationary is


  • W tan θμ

  • µW tan θ

  •  μW 1 + tan2 θ

  • µW sin θ


Two particles A and B having different masses are projected from a tower with same speed. A is projected vertically upward and B vertically downward. On reaching the ground

  • velocity of A is greater than that of B

  • velocity of B is greater than that of A

  • both A and B attain the same velocity

  • the particle with the larger mass attains higher velocity


A cylinder of height h is filled with water and is kept on a block of height h/2. The level of water in the cylinder is kept constant. Four holes numbered 1,2, 3 and 4 are at the side of the cylinder and at heights 0, h/4, h/2 and 3h/4, respectively. When all four holes are opened together, the hole from which water will reach farthest distance on the plane PQ is the hole number


  • 1

  • 2

  • 3

  • 4


A circular disc rolls on a horizontal floor without slipping and the centre of the disc moves with a uniform velocity v. Which of the following values of the velocity at a point on the rim of the disc can have ? 

  • v

  • − v

  • 2v

  • Zero


Three bodies of the same material and having masses m, m and 3m are at temperatures 40°C, 50° C and 60° C, respectively. If the bodies are brought in thermal contact, the final temperature will be

  • 45°C

  • 54°C

  • 52°C

  • 48°C