Archives

What do you mean by reflexive transitive and symmetric relation? Explain with some suitable examples.

The Reflexive property states that for every real number x, x=x he Symmetric Property states that for every real number x and y if x=y y = x The... View Article

Let a be the set of all points in a plane and o be the origin show that the relation to={ p, q }:p Q €A and op = OQ } is an equivalence relation

Let us denote this relation by R={(P, Q): OP=OQ} for O is the origin. Now (P, P)∈R since OP=OQ for any point P. So the relation is... View Article

What is the golden ratio?

A golden ratio is a special number approximately equal to 1.618. It appears many times in geometry, art, architecture and other areas. If their... View Article

What is a temporary magnet?

Temporary magnets are made from soft metals, and only retain their magnetism while near a permanent magnetic field or electronic current. They... View Article

What are actual resource?

Actual resources are the resources where quantity is known which are being used in the present. Actual resources are those that have been... View Article

Prove that the perpendicular at the point of contact to the tangent to a circle passes through the centre

Let, O is the centre of the given circle. A tangent PR has been drawn touching the circle at point P. Draw QP ⊥ RP at point P, such that point... View Article

Clear the idea of Independent and Dependent Events in the chapter Probability

If knowing whether one of them happened tells us something about whether the others happened is a dependent event. Independent events give us no... View Article

As the light ray travels from air medium to a solid medium, a mirror. Why it is reflected unless it should be also refracted?

Refraction is the bending of light as it passes from one medium to another. Refraction is an effect that occurs when a light wave, incident at an... View Article

the numerator of a fraction is 3 less than its denominator. If we add 1 to both numerator and denominator it becomes equal to 1/2. Find the fraction

The numerator of a fraction is 3 less than its denominator.n = d - 3:if we add 1 to both numerator and denominator it becomes equal to... View Article

As we know the sum of two adjacent angles is 180 and formed linear pair but if their are three angles and sum is 180 its could be linear pair or not

A linear pair is two adjacent angles that have a sum of 180 degrees, as a result, they form a line. You can have two angles that are... View Article

What is meant by fossil?

Fossils are the preserved remains, or traces of remains, of ancient organisms. Bones, shells, feathers, and leaves can all become fossils.A... View Article

If the polynomial ax³ +bx² – c is divisible by x² + bx +c then ab =?

Answer: If f(x) is divisible by g(x), then the remainder of a long division would equal zero. The remainder after dividing f(x) by g(x) is... View Article

Pooja has to work in the laboratory. What kind of clothes should she wear? Give the reason for your answer.

Synthetic fibres melt on heating. If they catch fire, they melt and stick to the body of the person wearing them. This is why it is advised not... View Article

What is cobalt?

A Silver-white magnetic metal, with the chemical symbol ‘Co’ and an atomic number of 27 is Cobalt. Cobalt is primarily used in... View Article

Expand the term ADP

ADP stands for adenosine diphosphate, and it's not only one of the most important molecules in the body, but it's also one of the most numerous.... View Article

Why is Displacement = Avg. Velocity x Time, only when velocity is constant?

When a particle is moving with constant velocity then its magnitude and direction both are not changing means particle must travel in a straight... View Article

How are the bonds and electrons changed in the negative resonance structure of nitrobenzene?

Resonance structure is an alternating method or way of drawing a Lewis dot structure for a compound. Add image... View Article

Why should our diet contain sufficient fibres in it?

Fibre helps to eliminate stools and toxins from your body which means your colon is working efficiently. If you are constipated this means your... View Article

What is the law of Conservation of momentum?

The law of conservation of momentum states as For a collision occurring between object 1 and object 2 in an Isolated system, the total momentum... View Article

How many chambers does the heart have?

The heart has four chambers: two atria and two ventricles. The right atrium receives oxygen-poor blood from the body and pumps it to the right... View Article

M	T	W	T	F	S	S
		1	2	3	4	5
6	7	8	9	10	11	12
13	14	15	16	17	18	19
20	21	22	23	24	25	26
27	28	29	30	31