Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents

Your guest activity stays on this device

Sign in to save progress →
Sign in

Motion in A Plane question

2023 · Q173
Guest · filters and generic practice availableBrowsing as a guest · PYQ filters and generic practice are available. Sign in only for personalised features and saved progress.
  1. PYQ Library
  2. /NEET
  3. /Physics
  4. /Motion in A Plane
  5. /2023 · Q173

Motion in A Plane question

2023 · Q173

NEETPhysicsMotion in A PlaneMCQ+4 / −1

A particle is executing uniform circular motion with velocity v⃗\vec{v}v and acceleration a⃗\vec{a}a. Which of the following is true?

  1. A
    v⃗\vec{v}v is a constant; a⃗\vec{a}a is not a constant
  2. B
    v⃗\vec{v}v is not a constant; a⃗\vec{a}a is not a constant
  3. C
    v⃗\vec{v}v is a constant; a⃗\vec{a}a is a constant
  4. D
    v⃗\vec{v}v is not a constant; a⃗\vec{a}a is a constant
View written solutionFree

Correct answer: B

Direction of velocity and centripetal acceleration changes continuously so $\vec{v}$ is not constant and $\vec{a}$ is not a constant.

PreviousNext

More from Motion in A Plane

  • A bullet is fired from a gun at the speed of 280 ms−1 in the direction 30∘ above the horizontal. The maximum height attained by the bullet is (g=9.8 ms−2,sin30∘=0.5):-2023 · MCQ
  • A horizontal bridge is built across a river. A student standing on the bridge throws a small ball vertically upwards with a velocity 4 m s−1. The ball strikes the water surface after 4 s. The height…2023 · MCQ
  • A cricket ball is thrown by a player at a speed of 20 m/s in a direction 30∘ above the horizontal. The maximum height attained by the ball during its motion is (g = 10 m/s2)2022 · MCQ
  • A ball is projected with a velocity, 10 ms−1, at an angle of 60∘ with the vertical direction. Its speed at the highest point of its trajectory will be2022 · MCQ
  • A particle moving in a circle of radius R with a uniform speed takes a time T to complete one revolution. If this particle were projected with the same speed at an angle 'θ' to the horizontal, the maximum height attained by it…2021 · MCQ
  • A car starts from rest and accelerates at 5m/s2. At t = 4 s, a ball is dropped out of a window by a person sitting in the car. What is the velocity and acceleration of the ball at t = 6 s? (Take g = 10 m/s2)2021 · MCQ
  • 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…2019 · MCQ
  • A particle moving with velocity V is acted by three forces shown by the vector triangle PQR. The velocity of the particle will : Includes diagram2019 · MCQ