मराठी

Read Each Statement Below Carefully and State with Reasons, If It is True Or False: The Total Path Length is Always Equal to the Magnitude of the Displacement Vector of a Particle. - Physics

Advertisements
Advertisements

प्रश्न

Read the statement below carefully and state with reason, if it is true or false:

The total path length is always equal to the magnitude of the displacement vector of a particle. 

पर्याय

  • True

  • False

MCQ
चूक किंवा बरोबर

उत्तर

This statement is False.

Explanation:

For instance, if a person completes one round along the circumference of a circle with radius R, then the length of the path covered will be 2πR, whereas the magnitude of the displacement will be zero.

shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 4: Motion in a Plane - Exercises [पृष्ठ ८५]

APPEARS IN

एनसीईआरटी Physics [English] Class 11
पाठ 4 Motion in a Plane
Exercises | Q 5.3 | पृष्ठ ८५

व्हिडिओ ट्यूटोरियलVIEW ALL [1]

संबंधित प्रश्‍न

Pick out the two scalar quantities in the following list:

Force, Angular momentum, Work, Current, Linear momentum, Electric field, Average velocity, Magnetic moment, Relative velocity.


Pick out the only vector quantity in the following list:


State with reasons, whether the following algebraic operations with scalar and vector physical quantities are meaningful:

  1. adding any two scalars,
  2. adding a scalar to a vector of the same dimensions,
  3. multiplying any vector by any scalar,
  4. multiplying any two scalars,
  5. adding any two vectors,
  6. adding a component of a vector to the same vector.

Read the statement below carefully and state with reason, if it is true or false:

Three vectors not lying in a plane can never add up to give a null vector.


Read the statement below carefully and state, with reason and example, if it is true or false:

A scalar quantity is one that is conserved in a process.


Read the statement below carefully and state, with reason and example, if it is true or false:

A scalar quantity is one that  does not vary from one point to another in space.


Consider the quantities, pressure, power, energy, impulse, gravitational potential, electrical charge, temperature, area. Out of these, the only vector quantities are ______.


It is found that |A + B| = |A|.This necessarily implies ______.


Following are four differrent relations about displacement, velocity and acceleration for the motion of a particle in general. Choose the incorrect one (s):

  1. `v_(av) = 1/2 [v(t_1) + v(t_2)]`
  2. `v_(av) = (r(t_2) - r(t_1))/(t_2 - t_1)`
  3. `r = 1/2 (v(t_2) - v(t_1))(t_2 - t_1)`
  4. `a_(av) = (v(t_2) - v(t_1))/(t_2 - t_1)`

A hill is 500 m high. Supplies are to be sent across the hill using a canon that can hurl packets at a speed of 125 m/s over the hill. The canon is located at a distance of 800 m from the foot of hill and can be moved on the ground at a speed of 2 m/s; so that its distance from the hill can be adjusted. What is the shortest time in which a packet can reach on the ground across the hill? Take g = 10 m/s2.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×