Advertisements
Advertisements
प्रश्न
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.
पर्याय
True
False
उत्तर
This statement is True.
Explanation:
Three vectors, which do not lie in a plane, cannot be represented by the sides of a triangle taken in the same order.
APPEARS IN
संबंधित प्रश्न
Read the statement below carefully and state with reason, if it is true or false:
The magnitude of a vector is always a scalar.
Read the statement below carefully and state with reason, if it is true or false:
The average speed of a particle (defined as total path length divided by the time taken to cover the path) is either greater or equal to the magnitude of average velocity of the particle over the same interval of time.
A vector has magnitude and direction. Does it have a location in space? Can it vary with time? Will two equal vectors a and b at different locations in space necessarily have identical physical effects? Give examples in support of your answer.
Read statement below carefully and state, with reasons and examples, if it is true or false:
A scalar quantity is one that has the same value for observers with different orientations of axes
Read the statement below carefully and state, with reason and example, if it is true or false:
A scalar quantity is one that can never take negative values.
The angle between A = `hati` + `hatj` and B = `hati` − `hatj` is ______.
Three vectors A, B and C add up to zero. Find which is false.
It is found that |A + B| = |A|.This necessarily implies ______.
If |A| = 2 and |B| = 4, then match the relations in column I with the angle θ between A and B in column II.
| Column I | Column II |
| (a) A.B = 0 | (i) θ = 0 |
| (b) A.B = + 8 | (ii) θ = 90° |
| (c) A.B = 4 | (iii) θ = 180° |
| (d) A.B = – 8 | (iv) θ = 60° |
A butterfly is flying with a velocity `4sqrt2` m/s in a North-East direction. The wind is slowly blowing at 1 m/s from North to South. The resultant displacement of the butterfly in 3 seconds is ______.
