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## FREE Online GS Subject wise Quiz

10 random questions for 10 mins
(Unlimited Attempts)

## Wave optics (part-1)

Feb 5, 2013

Huygens ’ Principle tells us that each point on a wave front is a source of secondary waves, which add up to give the wave front at a later time. Light has dual Nature. It possesses particle nature and wave nature both

## Alternating Current (Part-1)

Feb 4, 2013

In alternating current (AC, also ac), the flow of electric charge periodically reverses direction. Audio and Radio signals carried on electrical wires are also examples of alternating current.

## Alternating Current (Part-2)

Feb 4, 2013

The induced current opposes the cause of its origin. Len’s law is in accordance with the law of conservation of energy.

## Electromagnetic induction (part-2)

Feb 2, 2013

The induced current opposes the cause of its origin. Len’s law is in accordance with the law of conservation of energy.

## Electromagnetic induction (part-1)

Feb 2, 2013

The magnetic flux through a surface of area A placed in a uniform magnetic field B. Faraday’s laws of induction imply that the emf induced in a coil of N turns is directly related to the rate of change of flux through it

## Magnetism and matter (part-2)

Feb 2, 2013

The various features of the Earth's magnetic field vary in a predictable way across the surface of the globe.

## Magnetism and matter (part-1)

Feb 2, 2013

We can define a bar magnet as it is simply a permanent magnet having a shape of a bar. It has a north and a south pole. Its magnetic field is said to go out from the North Pole and in to the South Pole.

## Moving charges and magnetism (part-2)

Feb 1, 2013

We can generate magnetic fields by using and the toroid and solenoid . The television uses the solenoid to generate magnetic fields needed

## Moving charges and magnetism (part-1)

Feb 1, 2013

To describes how an electric field affects and is affected by a medium , we can use Electric permittivity. It is determined by the ability of a material to polarise in response to an applied field, and thereby to cancel, partially, the field inside the material.

## Probability (part-2)

Feb 1, 2013

We can express probability as: the number of occurrences of a targeted event divided by the number of occurrences plus the number of failures of occurrences.

## Linear Programming (part-2)

Feb 1, 2013

Linear optimization is the alternate name given to the term linear programming. Sometimes it also known as, is the problem of maximizing or minimizing a linear function over a convex polyhedron. Simplistically, linear programming is the optimization of an outcome based on some set of constraints using a linear mathematical model.

## Linear Programming (part-1)

Feb 1, 2013

Linear optimization is the alternate name given to the term linear programming. Sometimes it also known as, is the problem of maximizing or minimizing a linear function over a convex polyhedron. Simplistically, linear programming is the optimization of an outcome based on some set of constraints using a linear mathematical model.

## Three-dimensional Geometry (part-2)

Jan 31, 2013

Angle between skew lines is the angle between two intersecting lines drawn from any point (preferably through the origin) parallel to each of the skew lines.

## Three-dimensional Geometry (part-1)

Jan 31, 2013

In this video we will talk about the direction cosines and direction ratios of a line joining two points and also discuss about the equations of lines and planes in space under different conditions, angle between two lines, two planes, a line and a plane, shortest distance between two skew lines and distance of a point from a plane

## Vectors Algebra (part-2)

Jan 31, 2013

The vector sum of two coinitial vectors is given by the diagonal of the parallelogram whose adjacent sides are the given vectors.

## Vectors Algebra (part-1)

Jan 31, 2013

The quantity which involves only one value (magnitude) which is a real number is called as scalars. However, an answer to the second query is a quantity (called force) which involves muscular strength (magnitude) and direction (in which another player is positioned). Such quantities are called vectors.

## Differential Equations (part-2)

Jan 31, 2013

To solve no homogeneous ordinary differential equations we must know the general solution to the homogenous version, in which case the undetermined coefficients method or variation of parameters can be used to find the particular solution.

## Differential Equations (part-1)

Jan 31, 2013

In this video we will discuss about the general and particular solution of a differential equation. By the degree of a differential equation, when it is a polynomial equation in derivatives, we mean the highest power (positive integral index) of the highest order derivative involved in the given differential equation.

## Integrals (part-1)

Jan 31, 2013

The functions that could possibly have given function as a derivative are called anti derivatives (or primitive) of the function

## Applications of the Integrals (part-2)

Jan 31, 2013

In this video we have given a focused on the applications of integrals in all the examples that you are capable of doing the integrals.

## Applications of the Integrals (part-1)

Jan 31, 2013

In the topic geometry, we have learnt formulae to find areas of different geometrical figures including triangles, rectangles, trapezias and circles.

## Applications of Derivatives (part-2)

Jan 30, 2013

Approximate is an estimation of a number or rounding a number to its nearest place value.

## Applications of Derivatives (part-1)

Jan 30, 2013

In the topic tangents and normals, we will use differentiation to find the equation of the tangent line and the normal line to a curve at a given point.

## Continuity and Differentiability (part-2)

Jan 30, 2013

Sometimes the relation between two variables is neither explicit nor implicit, but some link of a third variable with each of the two variables, separately, establishes a relation between the first two variables.

## Continuity and Differentiability (part-1)

Jan 30, 2013

Continuity of a function at a point is entirely dictated by the limit of the function at that point, it is reasonable to expect results analogous to the case of limits.

## Chemistry in Everyday Life

Jan 29, 2013

Molecules having molecular masses (~100 – 500u) comes under the category of drugs. These interact with macromolecular targets and produce a biological response.

## Polymer (part-2)

Jan 29, 2013

Step-growth polymerization follows only one type of reaction mechanism for the formation of polymer. The distinct initiation, propagation, and termination steps of chain-growth polymerization are meaningless in step-growth polymerization.

## Polymer (part-1)

Jan 29, 2013

Molecules of a polymer has high molar masses and are composed of a large number of repeating units. There are both naturally occurring and synthetic polymers

## Biomolecules (part-2)

Jan 29, 2013

Enzymes are also a form of proteins that facilitate biochemical reactions. They are also work as catalysts because they speed up chemical reactions. Examples include the enzymes lactase and pepsin.

## Biomolecules (part-1)

Jan 29, 2013

Carbohydrates are defined as optically active polyhydroxy aldehydes or polyhydroxy ketones or compounds which give such compounds on hydrolysis

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