NCERT Solutions for Class 11 Physics Chapter 4 - Motion in a PlaneShare
NCERT Solutions for Class 11 Physics Chapter 4 - Motion in a Plane is one of the most significant study materials for students of Class 11 Science stream. So, students who are finding it difficult to grasp the important concepts in Chapter Motion in a Plane can refer to our NCERT Solutions. These Solutions for Chapter 4 have been prepared in accordance with the latest syllabus of the CBSE for Class 11 Physics. Further, we have tried our best to present these Solutions in a detailed and most accurate manner to ensure their effectiveness for the Physics exam preparation.
Along with the answers to the questions given in the textbook, these Solutions also comprise of additional questions, Exemplar problems and MCQ’s. So, by practising all these questions, students can clear their doubts and prepare the different topics of Motion in a Plane Chapter in a thorough manner.
Some of the topics discussed in NCERT Solutions for Class 11 Physics chapter- Motion in a Plane are as follows -
- Scalars and vectors
- Multiplication of vectors by real numbers
- Addition and subtraction of vectors — graphical method
- Resolution of vectors
- Vector addition — analytical method
- Motion in a plane
- Motion in a plane with constant acceleration
- Relative velocity in two dimensions
- Projectile motion
- Uniform circular motion
NCERT Solutions for Class 11 Physics Chapter 4 - Motion in a Plane
State with reasons, whether the following algebraic operations with scalar and vector physical quantities are meaningful:
(a) adding any two scalars, (b) adding a scalar to a vector of the same dimensions,
(c) multiplying any vector by any scalar, (d) multiplying any two scalars, (e) adding any two vectors, (f) adding a component of a vector to the same vector.
Read each statement below carefully and state with reasons, if it is true or false:
(a) The magnitude of a vector is always a scalar, (b) each component of a vector is always a scalar, (c) the total path length is always equal to the magnitude of the displacement vector of a particle. (d) the average speed of a particle (defined as total the path) is either greater or equal to the magnitude of average velocity of the particle over the same interval of time, (e) Three vectors not lying in a plane can never add up to give a null vector.
Given a + b + c + d = 0, which of the following statements are correct:
A. a, b, c, and d must each be a null vector,
B. The magnitude of (a + c) equals the magnitude of (b + d),
C. The magnitude of a can never be greater than the sum of the magnitudes of b, c, and d,
D. b + c must lie in the plane of a and d if a and d are not collinear, and in the line of a and d, if they are collinear?
Three girls skating on a circular ice ground of radius 200 m start from a point P on the edge of the ground and reach a point Q diametrically opposite to P following different paths as shown in Fig. 4.20. What is the magnitude of the displacement vector for each? For which girl is this equal to the actual length of path skate ?
A cyclist starts from the centre O of a circular park of radius 1 km, reaches the edge P of the park, then cycles along the circumference, and returns to the centre along QO as shown in Fig. 4.21. If the round trip takes 10 min, what is the (a) net displacement, (b) average velocity, and (c) average speed of the cyclist?
On an open ground, a motorist follows a track that turns to his left by an angle of 600 after every 500 m. Starting from a given turn, specify the displacement of the motorist at the third, sixth and eighth turn. Compare the magnitude of the displacement with the total path length covered by the motorist in each case.
|Chapter 1 - Physical World|
|Chapter 2 - Units and Measurements|
|Chapter 3 - Motion in a Straight Line|
|Chapter 4 - Motion in a Plane|
|Chapter 5 - Laws of Motion|
|Chapter 6 - Work, Energy and Power|
|Chapter 7 - System of Particles and Rotational Motion|
|Chapter 8 - Gravitation|