Motion in a Plane MCQs with Explanations
Motion in a Plane MCQs – Class 11 Physics
Class: CBSE Class 11
Subject: Physics
Section: Kinematics
Topic: Motion in a Plane
CBSE Board Examinations • NCERT Based • Concept-Clearing MCQs
1. Motion in a plane is an example of:
Answer: (B) Two-dimensional motion
Explanation: Motion in a plane requires two coordinates (x and y) to describe the position of a particle, hence it is two-dimensional.
Explanation: Motion in a plane requires two coordinates (x and y) to describe the position of a particle, hence it is two-dimensional.
2. Which of the following quantities is a vector?
Answer: (C) Displacement
Explanation: Displacement has both magnitude and direction, making it a vector quantity.
Explanation: Displacement has both magnitude and direction, making it a vector quantity.
3. The resultant of two perpendicular vectors of magnitudes A and B is:
Answer: (C) √(A² + B²)
Explanation: For perpendicular vectors, the resultant magnitude is obtained using the Pythagorean theorem.
Explanation: For perpendicular vectors, the resultant magnitude is obtained using the Pythagorean theorem.
4. The angle made by the resultant vector with the x-axis is given by:
Answer: (B) tan⁻¹(B/A)
Explanation: If A is along x-axis and B along y-axis, then tanθ = B/A.
Explanation: If A is along x-axis and B along y-axis, then tanθ = B/A.
5. Projectile motion is an example of:
Answer: (C) Two-dimensional motion
Explanation: In projectile motion, motion occurs simultaneously in horizontal and vertical directions.
Explanation: In projectile motion, motion occurs simultaneously in horizontal and vertical directions.
