NEET Physics - New - Motion in a Plane

Buy NEET English 2022 (Express) Practice test pack

Question - 1

A particle moving with velocity \(\vec v\) is acted by three forces shown by the vector triangle PQR. The velocitv of the particle will __________

  • A Decrease
  • B Remain constant
  • C Change according to the smallest force \(\vec {OR}\)
  • D Increase

Question - 2

When an object is shot from the bottom of a long smooth inclined plane kept at an angle 60o with horizontal, it can travel a distance x1 along the plane. But when the inclination is decreased to 30o and the same object is shot with the same velocity, it can havel x2 distance. Then x1: x2 will be ____________

  • A \(1: \sqrt{2}\)
  • B \(\sqrt{2}: 1\)
  • C \(1: \sqrt{3}\)
  • D \(1: 2 \sqrt{3}\)

Question - 3

The ratio of resolving powers of an optical microscope for two wavelength \(\lambda_{1}=4000 \text { and } \lambda_{2}=6000\) is ___________

  • A 8:27
  • B 9:4
  • C 3:2
  • D 16:81

Question - 4

A ship A is moving Westwards with a speed of 10 km h-l and a ship B 100 km South of A is moving Northwards with a speed of l0 km h-l. The time after which the distance between them becomes shortest, is ___________ .

  • A 5 h
  • B 5\(\sqrt 2\) h
  • C 10\(\sqrt 2\) h
  • D 0 h

Question - 5

A particle is moving such that its position coordinate (x,y) are
(2m 3m) at time r = 0
(6m, 7m) attime t = 2s and
(13m, 14m) at time r = 5s.
Average velocity vector \(\left(\vec{V}_{a v}\right)\) from t = 0 to t = 5s is __________ .

  • A \(\frac{1}{5}(13 \hat{i}+14 \hat{j})\)
  • B \(\frac{7}{3}(\hat{i}+\hat{j})\)
  • C \(2(\hat{i}+\hat{j})\)
  • D \(\frac{11}{5}(\hat{i}+\hat{j})\)

Question - 6

Vectors \(\vec A,\vec B\ and\ \vec C\) are such that \(\vec{A} \cdot \vec{B}=0 \text { and } \vec{A} \cdot \vec{C}=0\) then the vector parallel to \(\vec A\)is _____________

  • A \(\vec{B}\ and \ \vec{C} \)
  • B \(\vec{A} \times \vec{B}\)
  • C \(\vec{B}+\vec{C}\)
  • D \(\vec{B} \times \vec{C}\)

Question - 7

The velocity of a projectile at the initial point A is \((2 \hat{i}+3 \hat{j})\)m/s. It's velocity (in m/s) at point.B is ____________ 

  • A \(-2 \hat{i}+3 \hat{j}\)
  • B \( 2 \hat{i}-3 \hat{j}\)
  • C \(2 \hat{i}+3 \hat{j}\)
  • D \(2 \hat{i}-3 \hat{j}\)

Question - 8

Aparticle has initial velocity \((2 \vec{i}+3 \vec{j})\) and acceleration \((0.3 \vec{i}+0.2 \vec{j})\). The magnitude of velocity after 10 seconds wiil be ___________ .

  • A \(9 \sqrt{2}\ units \)
  • B \(5 \sqrt{2}\ units\)
  • C 5 units
  • D 9 units

Question - 9

The horizontal range and the maximum height of a projectile are equal. The angle of projection of the projectiles is____________

  • A \(\theta=\tan ^{-1}\left(\frac{1}{4}\right)\)
  • B \(\theta=\tan ^{-1}(4)\)
  • C \(\theta=\tan ^{-1}(2)\)
  • D \(\theta=45^{\circ}\)

Question - 10

A projectile is fired at an angle of 45o with the horizontal. Elevation angle of the projectile at its highest point as seen from the point of projection is _______

  • A 60o
  • B \(\tan ^{-1}\left(\frac{1}{2}\right)\)
  • C \(\tan ^{-1}\left(\frac{\sqrt{3}}{2}\right)\)
  • D 45o
Previous Next
Previous Next
Previous Next
Previous Next
Previous Next
Previous Next
Previous Next
Previous Next
Previous Next
Previous Next
Previous Next
Previous Next
Previous Next
Previous Next
Previous Next