NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions


If C and R denote capacity and resistance, the dimensions of C R are :

  • M0L0T

  • ML0T

  • M0L0T2

  • not expressible in terms of M, L and T


An arrow is shot, its range is 200 m and its time of flight is 5 s. If g =10 m/s2, then the horizontal component of velocity of the arrow is :

  • 12.5 m/s

  • 250 m/s

  • 31.25 m/s

  • 40 m/s


A force of 49 newtons is just able to move a block of wood weighing 10 kg-on a rough horizontal surface. Its coefficient of friction is :

  • 1

  • 0.7

  • 0.5

  • zero


Two bodies of masses m and 2 m have equal kinetic energies. The ratio of their linear momenta is :

  • 1

  • 1/2

  • 1/2

  • 2


A ball of mass m elastically collides with a wall with velocity 'v', then change in its momentum is equal to :

  • 2m

  • 2mv

  • + 8mv

  • Zero


A solid sphere is rotating about a diameter at an angular velocity ω. If it cools so that its radius reduces to 1n of its original value, its angular velocity becomes:

  • ωn

  • ωn2

  • n2ω


Two satellites A and B go around a planet P in circular orbits having radius 4 R and R respectively. If the speed of satellite A is 3v, then the speed of satellite B will be

  • 6v

  • 9v

  • 3v

  • none of these


The period of oscillation of a simple pendulum of constant length at the surface of the earth is T. Its time period inside a mine will be :

  • can not be compared

  • equal to T

  • less than T

  • more than T


When a drop splits up into a number of drops, then :

  • Area increases

  • Volume increases

  • Energy is absorbed

  • Energy is liberated


A 5m aluminium wire (Y = 7 × 1010 N/m2) of diameter 3mm supports a 40 kg mass. In order to have the same elongation in copper wire (Y =12 x 1010 N/m2) of the same length under the same weight, the diameter should be in mm :

  • 1.75

  • 2.0

  • 2.3

  • 5.0