MEDIUM
Earn 100

Which principle of organising emphasizes that a subordinate should receive orders from one superior only?
(a)Unity of Command
(b)Unity of Direction
(c)Scalar Chain
(d)Division of Work

50% studentsanswered this correctly
Important Questions on Continuity and Differentiability
MEDIUM
The identical point charges, each, are kept apart in air. A third point charge of unknown magnitude and sign is placed on the line joining the charges such that the system remains in equilibrium. Find the position and nature of .

EASY
For let and . If then is equal to:

HARD
Four-point charges and are placed at the corners of a square of sideas shown in the figure.
Find the resultant electric force on a charge .

MEDIUM
If , then which one of the following statements is not correct?

EASY
A relation in a set is called _____, if implies , for all .

MEDIUM
If is a matrix satisfying the equation , where is identity matrix, then the ordered pair is equal to

MEDIUM
If is a square matrix such that , then is equal to

HARD
Let be the set of natural numbers and be the relation on defined by for all . Show that is an equivalence relation.

EASY
Check whether the relation defined in the set as is reflexive, symmetric or transitive.

MEDIUM
If is a matrix such that , then is equal to :

MEDIUM
Show that the relation on is defined as , is reflexive and transitive but not symmetric.

MEDIUM
Let such that Then, a value of is:

HARD
Three-point charges and are placed at the vertices of an equilateral triangle ABC of side as shown in the figure. Obtain the expression for the magnitude of the resultant electric force acting on the charge .

EASY
If is a symmetric matrix and is skew- symmetric matrix such that , then is equal to:

EASY
Find a matrix such that , where and

EASY
and are two matrices such that then

MEDIUM
Let be a relation defined on as a b is is a multiple of . Then is

HARD
Let . Show that is an equivalence relation. Find the set of all elements related to . Also write the equivalence class .

EASY
Consider the non-empty set consisting of children in a family and a relation defined as if is brother of . Then is

