Chapter 2 - Scalars and Vectors
1. Physical quantity, which can be completely specified by its magnitude only, is called __________.
(Scalars, Vectors, None of above)
2. Physical quantity, which can be completely specified by its magnitude as well as direction, is called __________.
(Scalars, Vectors, None of Above)
3. Two or more than two scalars measured in the same system of units are equal only if they have the __________.
(Same Magnitude, Same magnitude and direction, Same direction)
4. Vectors are denoted by __________.
(or a, b, c)
5. Magnitude of vectors is denoted by __________.
(or a, b, c)
6. Two vectors are equal without any consideration of their initial point only if they have __________.
(Same magnitude, Same magnitude and similar direction, Same direction)
7. The tail end of a vector line is called __________.
(Initial point of the vector, terminal point of the vector, final point of the vector)
8. The magnitude of a vector is always treated as __________.
(Negative, Non-Negative, Negative and Positive both)
9. In parallelogram law of vector addition the resultant of the vector is represented by __________.
(Diagonal of the parallelogram, any adjacent side of the parallelogram, opposite side of the parallelogram)
10. Law of cosine is normally used to determine the __________.
(Magnitude of resultant, direction of resultant, both magnitude and direction of the resultant)
11. The product of number “m” and vectorgenerates a new vector. The magnitude of the product is represented by __________.
(B = |m|A, A = |m|B, |m| = BA)
12. Law of Sine is normally used for determination of __________.
(Magnitude of resultant, Direction of Resultant, Both Magnitude and Direction)
13. m= m is governed by __________.
(commutative law for multiplication, Associative law for multiplication, Distributive law for multiplication)
14. m= (mn)is governed by __________.
(Commutative law for multiplication, Associative law for multiplication, Distributive law for multiplication)
15. (m + n) = m = n follows __________.
(Commutative law, Associative Law, Distributive Law)
16. The division of a vector by a positive number n is given by= |m| where m = 1/n the direction of is __________.
(same as , oppoosite to , parallel to itself)
17. The division of vector by a negative number n is given by = |m| where m = 1/n the direction theis __________.
(same as , oppoosite to , parallel to itself)
18. A unit vector is represented by __________.
(,,)
19. The unit vectors are __________.
(parallel to each other, perpendicular to each other, none of the above)
20. The sum of rectangular components vector produces the original vector, which is represented by __________.
21. The magnitude of vectoris given by __________.
, , )
22. The dot product of unit vectors and is equal to __________.
(i, , )
23. The dot product of unit vectors and is equal to __________.
(
24. The cross product of unit vector and is equal to __________.
(0, 1, )
25. The vector product of and is ___________.
(-,, r)
26. A vector which can be displaced parallel to it self and applied at any point is known as __________.
(Null vector, Free Vector, Position Vector)
27. A vector, which can represent the position of a point with respect to some fixed point in coordinate system, is called __________.
(Null Vector, Free Vector, Position Vector)
28. If two vectors which are equal in magnitude but opposite in direction, their combination produces __________.
(Null Vector, Free Vector, Position Vector)
29. The horizontal component of vector is given by __________.
(A cos q, A sin q, A tan q)
30. The vertical component of vector is given by __________.
(Acosq, Asinq, Atan)
31. The product of magnitude of two vectors and cosine of the angle between them is called __________.
(Scalar Product, Vector Product, None of the above)
32. The product of magnitude of two vectors and sine of the angle between them is called __________.
(Scalar Product, Vector Product, None of the above)
33. Ifandare the two vectors then __________.
34. Two or more vectors are added by __________.
(Head to tail rule, simple addition, none of these)
35. The angle between the horizontal and vertical component of a vector is __________.
(90°, 0°, 180°)
36. If the resultant of two forces of magnitude 3N and 4N is 5N then the angle between these two forces is __________.
(0°, 45°, 90°)
37. The dot product of two vectors is zero when they are __________.
(In the same Direction, Perpendicular to each other, In the opposite direction)
38. If the cross product of two vectors is zero they are __________.
(Parallel to each other, Perpendicular to each other, Opposite in direction)
39. Ifare __________.
(Parallel to Each other, either A or B is a null vector, perpendicular to each other)
40. The cross product of two vector is a __________.
(Scalar, Vector, None of these)
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